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Finding the Fourth Proportional to 261,452.52, 392,114.19 and 71,903.69

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Solution

The fourth proportional to 261,452.52, 392,114.19 and 71,903.69 is: 107,837.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,452.52 : 392,114.19 = 71,903.69 : x
  2. Step 2: Convert to fraction form
    261,452.52/392,114.19 = 71,903.69/x
  3. Step 3: Cross multiply
    261,452.52x = 392,114.19 × 71,903.69
  4. Step 4: Simplify right side
    261,452.52x = 28,194,457,542.64
  5. Step 5: Solve for x
    x = 28,194,457,542.64/261,452.52
  6. Step 6: Final answer
    x = 107,837.77

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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.