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Finding the Fourth Proportional to 297,002.88, 445,458.24 and 86,618.88

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Solution

The fourth proportional to 297,002.88, 445,458.24 and 86,618.88 is: 129,914.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,002.88 : 445,458.24 = 86,618.88 : x
  2. Step 2: Convert to fraction form
    297,002.88/445,458.24 = 86,618.88/x
  3. Step 3: Cross multiply
    297,002.88x = 445,458.24 × 86,618.88
  4. Step 4: Simplify right side
    297,002.88x = 38,585,093,835.57
  5. Step 5: Solve for x
    x = 38,585,093,835.57/297,002.88
  6. Step 6: Final answer
    x = 129,914.88

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1.5x scale

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.