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Finding the Fourth Proportional to 457,641.20, 631,544.85 and 253,691.61

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Solution

The fourth proportional to 457,641.20, 631,544.85 and 253,691.61 is: 350,094.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,641.20 : 631,544.85 = 253,691.61 : x
  2. Step 2: Convert to fraction form
    457,641.20/631,544.85 = 253,691.61/x
  3. Step 3: Cross multiply
    457,641.20x = 631,544.85 × 253,691.61
  4. Step 4: Simplify right side
    457,641.20x = 160,217,627,415.42
  5. Step 5: Solve for x
    x = 160,217,627,415.42/457,641.20
  6. Step 6: Final answer
    x = 350,094.41

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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.