Home / 279,478.05-385,679.69-152,153.64

Finding the Fourth Proportional to 279,478.05, 385,679.69 and 152,153.64

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Solution

The fourth proportional to 279,478.05, 385,679.69 and 152,153.64 is: 209,972.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,478.05 : 385,679.69 = 152,153.64 : x
  2. Step 2: Convert to fraction form
    279,478.05/385,679.69 = 152,153.64/x
  3. Step 3: Cross multiply
    279,478.05x = 385,679.69 × 152,153.64
  4. Step 4: Simplify right side
    279,478.05x = 58,682,568,089.45
  5. Step 5: Solve for x
    x = 58,682,568,089.45/279,478.05
  6. Step 6: Final answer
    x = 209,972.01

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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.