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Finding the Fourth Proportional to 292,757.54, 439,136.31 and 71,141.54

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Solution

The fourth proportional to 292,757.54, 439,136.31 and 71,141.54 is: 106,712.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,757.54 : 439,136.31 = 71,141.54 : x
  2. Step 2: Convert to fraction form
    292,757.54/439,136.31 = 71,141.54/x
  3. Step 3: Cross multiply
    292,757.54x = 439,136.31 × 71,141.54
  4. Step 4: Simplify right side
    292,757.54x = 31,240,833,363.32
  5. Step 5: Solve for x
    x = 31,240,833,363.32/292,757.54
  6. Step 6: Final answer
    x = 106,712.31

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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.