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Finding the Fourth Proportional to 438,114.52, 604,658.55 and 256,871.08

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Solution

The fourth proportional to 438,114.52, 604,658.55 and 256,871.08 is: 354,517.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,114.52 : 604,658.55 = 256,871.08 : x
  2. Step 2: Convert to fraction form
    438,114.52/604,658.55 = 256,871.08/x
  3. Step 3: Cross multiply
    438,114.52x = 604,658.55 × 256,871.08
  4. Step 4: Simplify right side
    438,114.52x = 155,319,294,769.73
  5. Step 5: Solve for x
    x = 155,319,294,769.73/438,114.52
  6. Step 6: Final answer
    x = 354,517.57

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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.