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Finding the Fourth Proportional to 261,385.02, 392,092.14 and 74,381.94

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Solution

The fourth proportional to 261,385.02, 392,092.14 and 74,381.94 is: 111,577.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,385.02 : 392,092.14 = 74,381.94 : x
  2. Step 2: Convert to fraction form
    261,385.02/392,092.14 = 74,381.94/x
  3. Step 3: Cross multiply
    261,385.02x = 392,092.14 × 74,381.94
  4. Step 4: Simplify right side
    261,385.02x = 29,164,574,031.95
  5. Step 5: Solve for x
    x = 29,164,574,031.95/261,385.02
  6. Step 6: Final answer
    x = 111,577.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.