Home / 217,780.30-326,711.76-75,620.04

Finding the Fourth Proportional to 217,780.30, 326,711.76 and 75,620.04

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Solution

The fourth proportional to 217,780.30, 326,711.76 and 75,620.04 is: 113,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,780.30 : 326,711.76 = 75,620.04 : x
  2. Step 2: Convert to fraction form
    217,780.30/326,711.76 = 75,620.04/x
  3. Step 3: Cross multiply
    217,780.30x = 326,711.76 × 75,620.04
  4. Step 4: Simplify right side
    217,780.30x = 24,705,956,359.67
  5. Step 5: Solve for x
    x = 24,705,956,359.67/217,780.30
  6. Step 6: Final answer
    x = 113,444.40

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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.