Home / 218,321.85-326,826.68-129,529.65

Finding the Fourth Proportional to 218,321.85, 326,826.68 and 129,529.65

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Solution

The fourth proportional to 218,321.85, 326,826.68 and 129,529.65 is: 193,905.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,321.85 : 326,826.68 = 129,529.65 : x
  2. Step 2: Convert to fraction form
    218,321.85/326,826.68 = 129,529.65/x
  3. Step 3: Cross multiply
    218,321.85x = 326,826.68 × 129,529.65
  4. Step 4: Simplify right side
    218,321.85x = 42,333,744,823.41
  5. Step 5: Solve for x
    x = 42,333,744,823.41/218,321.85
  6. Step 6: Final answer
    x = 193,905.21

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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.