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Finding the Fourth Proportional to 457,761.88, 631,718.98 and 253,821.39

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Solution

The fourth proportional to 457,761.88, 631,718.98 and 253,821.39 is: 350,277.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,761.88 : 631,718.98 = 253,821.39 : x
  2. Step 2: Convert to fraction form
    457,761.88/631,718.98 = 253,821.39/x
  3. Step 3: Cross multiply
    457,761.88x = 631,718.98 × 253,821.39
  4. Step 4: Simplify right side
    457,761.88x = 160,343,789,592.98
  5. Step 5: Solve for x
    x = 160,343,789,592.98/457,761.88
  6. Step 6: Final answer
    x = 350,277.73

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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.