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Finding the Fourth Proportional to 298,791.68, 448,275.34 and 88,435.10

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Solution

The fourth proportional to 298,791.68, 448,275.34 and 88,435.10 is: 132,678.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,791.68 : 448,275.34 = 88,435.10 : x
  2. Step 2: Convert to fraction form
    298,791.68/448,275.34 = 88,435.10/x
  3. Step 3: Cross multiply
    298,791.68x = 448,275.34 × 88,435.10
  4. Step 4: Simplify right side
    298,791.68x = 39,643,274,520.43
  5. Step 5: Solve for x
    x = 39,643,274,520.43/298,791.68
  6. Step 6: Final answer
    x = 132,678.64

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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.