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Finding the Fourth Proportional to 261,337.20, 392,203.08 and 191,397.84

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Solution

The fourth proportional to 261,337.20, 392,203.08 and 191,397.84 is: 287,241.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,337.20 : 392,203.08 = 191,397.84 : x
  2. Step 2: Convert to fraction form
    261,337.20/392,203.08 = 191,397.84/x
  3. Step 3: Cross multiply
    261,337.20x = 392,203.08 × 191,397.84
  4. Step 4: Simplify right side
    261,337.20x = 75,066,822,353.35
  5. Step 5: Solve for x
    x = 75,066,822,353.35/261,337.20
  6. Step 6: Final answer
    x = 287,241.24

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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.