Home / 279,709.19-385,999.17-158,850.45

Finding the Fourth Proportional to 279,709.19, 385,999.17 and 158,850.45

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Solution

The fourth proportional to 279,709.19, 385,999.17 and 158,850.45 is: 219,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,709.19 : 385,999.17 = 158,850.45 : x
  2. Step 2: Convert to fraction form
    279,709.19/385,999.17 = 158,850.45/x
  3. Step 3: Cross multiply
    279,709.19x = 385,999.17 × 158,850.45
  4. Step 4: Simplify right side
    279,709.19x = 61,316,141,854.13
  5. Step 5: Solve for x
    x = 61,316,141,854.13/279,709.19
  6. Step 6: Final answer
    x = 219,213.90

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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.