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Finding the Fourth Proportional to 518,532, 777,772 and 203,046.72

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Solution

The fourth proportional to 518,532, 777,772 and 203,046.72 is: 304,559.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,532 : 777,772 = 203,046.72 : x
  2. Step 2: Convert to fraction form
    518,532/777,772 = 203,046.72/x
  3. Step 3: Cross multiply
    518,532x = 777,772 × 203,046.72
  4. Step 4: Simplify right side
    518,532x = 157,924,053,507.84
  5. Step 5: Solve for x
    x = 157,924,053,507.84/518,532
  6. Step 6: Final answer
    x = 304,559.90

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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.