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Finding the Fourth Proportional to 150,276.80, 207,381.60 and 83,211.20

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Solution

The fourth proportional to 150,276.80, 207,381.60 and 83,211.20 is: 114,831.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,276.80 : 207,381.60 = 83,211.20 : x
  2. Step 2: Convert to fraction form
    150,276.80/207,381.60 = 83,211.20/x
  3. Step 3: Cross multiply
    150,276.80x = 207,381.60 × 83,211.20
  4. Step 4: Simplify right side
    150,276.80x = 17,256,471,793.92
  5. Step 5: Solve for x
    x = 17,256,471,793.92/150,276.80
  6. Step 6: Final answer
    x = 114,831.24

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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.