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Finding the Fourth Proportional to 436,387.49, 654,580.91 and 136,891.20

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Solution

The fourth proportional to 436,387.49, 654,580.91 and 136,891.20 is: 205,336.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,387.49 : 654,580.91 = 136,891.20 : x
  2. Step 2: Convert to fraction form
    436,387.49/654,580.91 = 136,891.20/x
  3. Step 3: Cross multiply
    436,387.49x = 654,580.91 × 136,891.20
  4. Step 4: Simplify right side
    436,387.49x = 89,606,366,266.99
  5. Step 5: Solve for x
    x = 89,606,366,266.99/436,387.49
  6. Step 6: Final answer
    x = 205,336.70

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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.