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Finding the Fourth Proportional to 458,153.48, 687,251.82 and 378,042.86

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Solution

The fourth proportional to 458,153.48, 687,251.82 and 378,042.86 is: 567,082.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,153.48 : 687,251.82 = 378,042.86 : x
  2. Step 2: Convert to fraction form
    458,153.48/687,251.82 = 378,042.86/x
  3. Step 3: Cross multiply
    458,153.48x = 687,251.82 × 378,042.86
  4. Step 4: Simplify right side
    458,153.48x = 259,810,643,573.01
  5. Step 5: Solve for x
    x = 259,810,643,573.01/458,153.48
  6. Step 6: Final answer
    x = 567,082.11

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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.