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Finding the Fourth Proportional to 217,039.60, 325,920.66 and 146,416.78

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Solution

The fourth proportional to 217,039.60, 325,920.66 and 146,416.78 is: 219,868.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,039.60 : 325,920.66 = 146,416.78 : x
  2. Step 2: Convert to fraction form
    217,039.60/325,920.66 = 146,416.78/x
  3. Step 3: Cross multiply
    217,039.60x = 325,920.66 × 146,416.78
  4. Step 4: Simplify right side
    217,039.60x = 47,720,253,572.67
  5. Step 5: Solve for x
    x = 47,720,253,572.67/217,039.60
  6. Step 6: Final answer
    x = 219,868.88

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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.