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Finding the Fourth Proportional to 387,250.90, 580,857.84 and 147,419.93

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Solution

The fourth proportional to 387,250.90, 580,857.84 and 147,419.93 is: 221,122.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,250.90 : 580,857.84 = 147,419.93 : x
  2. Step 2: Convert to fraction form
    387,250.90/580,857.84 = 147,419.93/x
  3. Step 3: Cross multiply
    387,250.90x = 580,857.84 × 147,419.93
  4. Step 4: Simplify right side
    387,250.90x = 85,630,023,564.90
  5. Step 5: Solve for x
    x = 85,630,023,564.90/387,250.90
  6. Step 6: Final answer
    x = 221,122.85

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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.