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Finding the Fourth Proportional to 438,088.10, 604,350.72 and 256,687.38

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Solution

The fourth proportional to 438,088.10, 604,350.72 and 256,687.38 is: 354,105.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,088.10 : 604,350.72 = 256,687.38 : x
  2. Step 2: Convert to fraction form
    438,088.10/604,350.72 = 256,687.38/x
  3. Step 3: Cross multiply
    438,088.10x = 604,350.72 × 256,687.38
  4. Step 4: Simplify right side
    438,088.10x = 155,129,202,917.91
  5. Step 5: Solve for x
    x = 155,129,202,917.91/438,088.10
  6. Step 6: Final answer
    x = 354,105.04

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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.