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Finding the Fourth Proportional to 298,720.92, 448,081.38 and 88,342.47

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Solution

The fourth proportional to 298,720.92, 448,081.38 and 88,342.47 is: 132,513.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,720.92 : 448,081.38 = 88,342.47 : x
  2. Step 2: Convert to fraction form
    298,720.92/448,081.38 = 88,342.47/x
  3. Step 3: Cross multiply
    298,720.92x = 448,081.38 × 88,342.47
  4. Step 4: Simplify right side
    298,720.92x = 39,584,615,870.21
  5. Step 5: Solve for x
    x = 39,584,615,870.21/298,720.92
  6. Step 6: Final answer
    x = 132,513.71

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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.