Home / 445,007.20-667,510.80-129,474.40

Finding the Fourth Proportional to 445,007.20, 667,510.80 and 129,474.40

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Solution

The fourth proportional to 445,007.20, 667,510.80 and 129,474.40 is: 194,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,007.20 : 667,510.80 = 129,474.40 : x
  2. Step 2: Convert to fraction form
    445,007.20/667,510.80 = 129,474.40/x
  3. Step 3: Cross multiply
    445,007.20x = 667,510.80 × 129,474.40
  4. Step 4: Simplify right side
    445,007.20x = 86,425,560,323.52
  5. Step 5: Solve for x
    x = 86,425,560,323.52/445,007.20
  6. Step 6: Final answer
    x = 194,211.60

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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.