Home / 253,005,978,153.92-349,154,673,919.72-138,820,568,885.08

Finding the Fourth Proportional to 253,005,978,153.92, 349,154,673,919.72 and 138,820,568,885.08

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Solution

The fourth proportional to 253,005,978,153.92, 349,154,673,919.72 and 138,820,568,885.08 is: 191,575,909,850.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,005,978,153.92 : 349,154,673,919.72 = 138,820,568,885.08 : x
  2. Step 2: Convert to fraction form
    253,005,978,153.92/349,154,673,919.72 = 138,820,568,885.08/x
  3. Step 3: Cross multiply
    253,005,978,153.92x = 349,154,673,919.72 × 138,820,568,885.08
  4. Step 4: Simplify right side
    253,005,978,153.92x = 48,469,850,462,420,123,779,072
  5. Step 5: Solve for x
    x = 48,469,850,462,420,123,779,072/253,005,978,153.92
  6. Step 6: Final answer
    x = 191,575,909,850.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.