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Finding the Fourth Proportional to 218,151.84, 327,123 and 129,416.88

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Solution

The fourth proportional to 218,151.84, 327,123 and 129,416.88 is: 194,063.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,151.84 : 327,123 = 129,416.88 : x
  2. Step 2: Convert to fraction form
    218,151.84/327,123 = 129,416.88/x
  3. Step 3: Cross multiply
    218,151.84x = 327,123 × 129,416.88
  4. Step 4: Simplify right side
    218,151.84x = 42,335,238,036.24
  5. Step 5: Solve for x
    x = 42,335,238,036.24/218,151.84
  6. Step 6: Final answer
    x = 194,063.17

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1.5x scale

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.