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Finding the Fourth Proportional to 217,565.70, 326,348.55 and 124,080.90

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Solution

The fourth proportional to 217,565.70, 326,348.55 and 124,080.90 is: 186,121.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,565.70 : 326,348.55 = 124,080.90 : x
  2. Step 2: Convert to fraction form
    217,565.70/326,348.55 = 124,080.90/x
  3. Step 3: Cross multiply
    217,565.70x = 326,348.55 × 124,080.90
  4. Step 4: Simplify right side
    217,565.70x = 40,493,621,797.70
  5. Step 5: Solve for x
    x = 40,493,621,797.70/217,565.70
  6. Step 6: Final answer
    x = 186,121.35

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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.