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Finding the Fourth Proportional to 200,062.80, 276,123.60 and 128,532.24

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Solution

The fourth proportional to 200,062.80, 276,123.60 and 128,532.24 is: 177,398.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,062.80 : 276,123.60 = 128,532.24 : x
  2. Step 2: Convert to fraction form
    200,062.80/276,123.60 = 128,532.24/x
  3. Step 3: Cross multiply
    200,062.80x = 276,123.60 × 128,532.24
  4. Step 4: Simplify right side
    200,062.80x = 35,490,784,824.86
  5. Step 5: Solve for x
    x = 35,490,784,824.86/200,062.80
  6. Step 6: Final answer
    x = 177,398.22

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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.