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Finding the Fourth Proportional to 486,166.60, 729,249.90 and 272,715.40

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Solution

The fourth proportional to 486,166.60, 729,249.90 and 272,715.40 is: 409,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,166.60 : 729,249.90 = 272,715.40 : x
  2. Step 2: Convert to fraction form
    486,166.60/729,249.90 = 272,715.40/x
  3. Step 3: Cross multiply
    486,166.60x = 729,249.90 × 272,715.40
  4. Step 4: Simplify right side
    486,166.60x = 198,877,678,178.46
  5. Step 5: Solve for x
    x = 198,877,678,178.46/486,166.60
  6. Step 6: Final answer
    x = 409,073.10

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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.