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Finding the Fourth Proportional to 285,375.68, 428,106.72 and 98,342.72

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Solution

The fourth proportional to 285,375.68, 428,106.72 and 98,342.72 is: 147,528.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,375.68 : 428,106.72 = 98,342.72 : x
  2. Step 2: Convert to fraction form
    285,375.68/428,106.72 = 98,342.72/x
  3. Step 3: Cross multiply
    285,375.68x = 428,106.72 × 98,342.72
  4. Step 4: Simplify right side
    285,375.68x = 42,101,179,295.08
  5. Step 5: Solve for x
    x = 42,101,179,295.08/285,375.68
  6. Step 6: Final answer
    x = 147,528.97

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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.