Home / 230,545.20-318,146.04-128,573.76

Finding the Fourth Proportional to 230,545.20, 318,146.04 and 128,573.76

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Solution

The fourth proportional to 230,545.20, 318,146.04 and 128,573.76 is: 177,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,545.20 : 318,146.04 = 128,573.76 : x
  2. Step 2: Convert to fraction form
    230,545.20/318,146.04 = 128,573.76/x
  3. Step 3: Cross multiply
    230,545.20x = 318,146.04 × 128,573.76
  4. Step 4: Simplify right side
    230,545.20x = 40,905,232,591.91
  5. Step 5: Solve for x
    x = 40,905,232,591.91/230,545.20
  6. Step 6: Final answer
    x = 177,428.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.