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Finding the Fourth Proportional to 285,377.68, 428,109.72 and 98,344.72

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Solution

The fourth proportional to 285,377.68, 428,109.72 and 98,344.72 is: 147,531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,377.68 : 428,109.72 = 98,344.72 : x
  2. Step 2: Convert to fraction form
    285,377.68/428,109.72 = 98,344.72/x
  3. Step 3: Cross multiply
    285,377.68x = 428,109.72 × 98,344.72
  4. Step 4: Simplify right side
    285,377.68x = 42,102,330,542.68
  5. Step 5: Solve for x
    x = 42,102,330,542.68/285,377.68
  6. Step 6: Final answer
    x = 147,531.97

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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.