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Finding the Fourth Proportional to 487,999.53, 731,858.49 and 168,138.36

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Solution

The fourth proportional to 487,999.53, 731,858.49 and 168,138.36 is: 252,159.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,999.53 : 731,858.49 = 168,138.36 : x
  2. Step 2: Convert to fraction form
    487,999.53/731,858.49 = 168,138.36/x
  3. Step 3: Cross multiply
    487,999.53x = 731,858.49 × 168,138.36
  4. Step 4: Simplify right side
    487,999.53x = 123,053,486,260.68
  5. Step 5: Solve for x
    x = 123,053,486,260.68/487,999.53
  6. Step 6: Final answer
    x = 252,159.03

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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.