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Finding the Fourth Proportional to 392,813.55, 542,069.01 and 240,108.30

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Solution

The fourth proportional to 392,813.55, 542,069.01 and 240,108.30 is: 331,341.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,813.55 : 542,069.01 = 240,108.30 : x
  2. Step 2: Convert to fraction form
    392,813.55/542,069.01 = 240,108.30/x
  3. Step 3: Cross multiply
    392,813.55x = 542,069.01 × 240,108.30
  4. Step 4: Simplify right side
    392,813.55x = 130,155,268,473.78
  5. Step 5: Solve for x
    x = 130,155,268,473.78/392,813.55
  6. Step 6: Final answer
    x = 331,341.09

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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.