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Finding the Fourth Proportional to 261,941.62, 392,909.55 and 156,789.94

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Solution

The fourth proportional to 261,941.62, 392,909.55 and 156,789.94 is: 235,183.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,941.62 : 392,909.55 = 156,789.94 : x
  2. Step 2: Convert to fraction form
    261,941.62/392,909.55 = 156,789.94/x
  3. Step 3: Cross multiply
    261,941.62x = 392,909.55 × 156,789.94
  4. Step 4: Simplify right side
    261,941.62x = 61,604,264,769.93
  5. Step 5: Solve for x
    x = 61,604,264,769.93/261,941.62
  6. Step 6: Final answer
    x = 235,183.19

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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.