Home / 393,747.31-543,412.10-240,887.30

Finding the Fourth Proportional to 393,747.31, 543,412.10 and 240,887.30

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Solution

The fourth proportional to 393,747.31, 543,412.10 and 240,887.30 is: 332,449.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,747.31 : 543,412.10 = 240,887.30 : x
  2. Step 2: Convert to fraction form
    393,747.31/543,412.10 = 240,887.30/x
  3. Step 3: Cross multiply
    393,747.31x = 543,412.10 × 240,887.30
  4. Step 4: Simplify right side
    393,747.31x = 130,901,072,351.89
  5. Step 5: Solve for x
    x = 130,901,072,351.89/393,747.31
  6. Step 6: Final answer
    x = 332,449.44

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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.