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Finding the Fourth Proportional to 486,344.88, 729,123.66 and 186,672.42

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Solution

The fourth proportional to 486,344.88, 729,123.66 and 186,672.42 is: 279,857.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,344.88 : 729,123.66 = 186,672.42 : x
  2. Step 2: Convert to fraction form
    486,344.88/729,123.66 = 186,672.42/x
  3. Step 3: Cross multiply
    486,344.88x = 729,123.66 × 186,672.42
  4. Step 4: Simplify right side
    486,344.88x = 136,107,278,091.46
  5. Step 5: Solve for x
    x = 136,107,278,091.46/486,344.88
  6. Step 6: Final answer
    x = 279,857.53

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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.