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Finding the Fourth Proportional to 392,875.10, 542,153.22 and 240,169.04

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Solution

The fourth proportional to 392,875.10, 542,153.22 and 240,169.04 is: 331,424.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,875.10 : 542,153.22 = 240,169.04 : x
  2. Step 2: Convert to fraction form
    392,875.10/542,153.22 = 240,169.04/x
  3. Step 3: Cross multiply
    392,875.10x = 542,153.22 × 240,169.04
  4. Step 4: Simplify right side
    392,875.10x = 130,208,418,380.31
  5. Step 5: Solve for x
    x = 130,208,418,380.31/392,875.10
  6. Step 6: Final answer
    x = 331,424.46

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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.