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Finding the Fourth Proportional to 351,432.60, 527,148.90 and 258,120.60

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Solution

The fourth proportional to 351,432.60, 527,148.90 and 258,120.60 is: 387,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,432.60 : 527,148.90 = 258,120.60 : x
  2. Step 2: Convert to fraction form
    351,432.60/527,148.90 = 258,120.60/x
  3. Step 3: Cross multiply
    351,432.60x = 527,148.90 × 258,120.60
  4. Step 4: Simplify right side
    351,432.60x = 136,067,990,357.34
  5. Step 5: Solve for x
    x = 136,067,990,357.34/351,432.60
  6. Step 6: Final answer
    x = 387,180.90

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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.