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Finding the Fourth Proportional to 445,532.57, 668,263.87 and 125,671.47

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Solution

The fourth proportional to 445,532.57, 668,263.87 and 125,671.47 is: 188,497.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,532.57 : 668,263.87 = 125,671.47 : x
  2. Step 2: Convert to fraction form
    445,532.57/668,263.87 = 125,671.47/x
  3. Step 3: Cross multiply
    445,532.57x = 668,263.87 × 125,671.47
  4. Step 4: Simplify right side
    445,532.57x = 83,981,700,541.89
  5. Step 5: Solve for x
    x = 83,981,700,541.89/445,532.57
  6. Step 6: Final answer
    x = 188,497.33

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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.