Home / 432,251.02-648,319.09-128,639.73

Finding the Fourth Proportional to 432,251.02, 648,319.09 and 128,639.73

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Solution

The fourth proportional to 432,251.02, 648,319.09 and 128,639.73 is: 192,942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,251.02 : 648,319.09 = 128,639.73 : x
  2. Step 2: Convert to fraction form
    432,251.02/648,319.09 = 128,639.73/x
  3. Step 3: Cross multiply
    432,251.02x = 648,319.09 × 128,639.73
  4. Step 4: Simplify right side
    432,251.02x = 83,399,592,691.45
  5. Step 5: Solve for x
    x = 83,399,592,691.45/432,251.02
  6. Step 6: Final answer
    x = 192,942.50

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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.