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Finding the Fourth Proportional to 276,957.20, 415,435.80 and 99,491.60

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Solution

The fourth proportional to 276,957.20, 415,435.80 and 99,491.60 is: 149,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,957.20 : 415,435.80 = 99,491.60 : x
  2. Step 2: Convert to fraction form
    276,957.20/415,435.80 = 99,491.60/x
  3. Step 3: Cross multiply
    276,957.20x = 415,435.80 × 99,491.60
  4. Step 4: Simplify right side
    276,957.20x = 41,332,372,439.28
  5. Step 5: Solve for x
    x = 41,332,372,439.28/276,957.20
  6. Step 6: Final answer
    x = 149,237.40

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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.