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Finding the Fourth Proportional to 417,156.48, 625,920.72 and 192,396

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Solution

The fourth proportional to 417,156.48, 625,920.72 and 192,396 is: 288,679.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,156.48 : 625,920.72 = 192,396 : x
  2. Step 2: Convert to fraction form
    417,156.48/625,920.72 = 192,396/x
  3. Step 3: Cross multiply
    417,156.48x = 625,920.72 × 192,396
  4. Step 4: Simplify right side
    417,156.48x = 120,424,642,845.12
  5. Step 5: Solve for x
    x = 120,424,642,845.12/417,156.48
  6. Step 6: Final answer
    x = 288,679.78

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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.