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Finding the Fourth Proportional to 351,398.35, 526,545.61 and 271,631.78

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Solution

The fourth proportional to 351,398.35, 526,545.61 and 271,631.78 is: 407,021.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,398.35 : 526,545.61 = 271,631.78 : x
  2. Step 2: Convert to fraction form
    351,398.35/526,545.61 = 271,631.78/x
  3. Step 3: Cross multiply
    351,398.35x = 526,545.61 × 271,631.78
  4. Step 4: Simplify right side
    351,398.35x = 143,026,521,486.15
  5. Step 5: Solve for x
    x = 143,026,521,486.15/351,398.35
  6. Step 6: Final answer
    x = 407,021.04

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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.