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Finding the Fourth Proportional to 292,281.77, 438,373.25 and 81,871.31

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Solution

The fourth proportional to 292,281.77, 438,373.25 and 81,871.31 is: 122,793.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,281.77 : 438,373.25 = 81,871.31 : x
  2. Step 2: Convert to fraction form
    292,281.77/438,373.25 = 81,871.31/x
  3. Step 3: Cross multiply
    292,281.77x = 438,373.25 × 81,871.31
  4. Step 4: Simplify right side
    292,281.77x = 35,890,192,246.46
  5. Step 5: Solve for x
    x = 35,890,192,246.46/292,281.77
  6. Step 6: Final answer
    x = 122,793.13

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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.