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Finding the Fourth Proportional to 345,091.68, 517,211.28 and 145,342.08

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Solution

The fourth proportional to 345,091.68, 517,211.28 and 145,342.08 is: 217,833.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,091.68 : 517,211.28 = 145,342.08 : x
  2. Step 2: Convert to fraction form
    345,091.68/517,211.28 = 145,342.08/x
  3. Step 3: Cross multiply
    345,091.68x = 517,211.28 × 145,342.08
  4. Step 4: Simplify right side
    345,091.68x = 75,172,563,234.66
  5. Step 5: Solve for x
    x = 75,172,563,234.66/345,091.68
  6. Step 6: Final answer
    x = 217,833.60

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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.