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Finding the Fourth Proportional to 510,491.89, 765,737.79 and 136,505.17

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Solution

The fourth proportional to 510,491.89, 765,737.79 and 136,505.17 is: 204,757.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,491.89 : 765,737.79 = 136,505.17 : x
  2. Step 2: Convert to fraction form
    510,491.89/765,737.79 = 136,505.17/x
  3. Step 3: Cross multiply
    510,491.89x = 765,737.79 × 136,505.17
  4. Step 4: Simplify right side
    510,491.89x = 104,527,167,199.37
  5. Step 5: Solve for x
    x = 104,527,167,199.37/510,491.89
  6. Step 6: Final answer
    x = 204,757.74

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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.