Home / 218,723.08-328,073.68-85,627.73

Finding the Fourth Proportional to 218,723.08, 328,073.68 and 85,627.73

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Solution

The fourth proportional to 218,723.08, 328,073.68 and 85,627.73 is: 128,437.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,723.08 : 328,073.68 = 85,627.73 : x
  2. Step 2: Convert to fraction form
    218,723.08/328,073.68 = 85,627.73/x
  3. Step 3: Cross multiply
    218,723.08x = 328,073.68 × 85,627.73
  4. Step 4: Simplify right side
    218,723.08x = 28,092,202,636.71
  5. Step 5: Solve for x
    x = 28,092,202,636.71/218,723.08
  6. Step 6: Final answer
    x = 128,437.31

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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.