Home / 445,155.20-667,732.80-129,622.40

Finding the Fourth Proportional to 445,155.20, 667,732.80 and 129,622.40

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Solution

The fourth proportional to 445,155.20, 667,732.80 and 129,622.40 is: 194,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,155.20 : 667,732.80 = 129,622.40 : x
  2. Step 2: Convert to fraction form
    445,155.20/667,732.80 = 129,622.40/x
  3. Step 3: Cross multiply
    445,155.20x = 667,732.80 × 129,622.40
  4. Step 4: Simplify right side
    445,155.20x = 86,553,128,094.72
  5. Step 5: Solve for x
    x = 86,553,128,094.72/445,155.20
  6. Step 6: Final answer
    x = 194,433.60

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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.