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Finding the Fourth Proportional to 234,182, 351,273 and 86,438

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Solution

The fourth proportional to 234,182, 351,273 and 86,438 is: 129,657

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,182 : 351,273 = 86,438 : x
  2. Step 2: Convert to fraction form
    234,182/351,273 = 86,438/x
  3. Step 3: Cross multiply
    234,182x = 351,273 × 86,438
  4. Step 4: Simplify right side
    234,182x = 30,363,335,574
  5. Step 5: Solve for x
    x = 30,363,335,574/234,182
  6. Step 6: Final answer
    x = 129,657

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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.