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Finding the Fourth Proportional to 457,511.48, 631,348.65 and 253,565.87

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Solution

The fourth proportional to 457,511.48, 631,348.65 and 253,565.87 is: 349,911.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,511.48 : 631,348.65 = 253,565.87 : x
  2. Step 2: Convert to fraction form
    457,511.48/631,348.65 = 253,565.87/x
  3. Step 3: Cross multiply
    457,511.48x = 631,348.65 × 253,565.87
  4. Step 4: Simplify right side
    457,511.48x = 160,088,466,553.83
  5. Step 5: Solve for x
    x = 160,088,466,553.83/457,511.48
  6. Step 6: Final answer
    x = 349,911.37

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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.