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Finding the Fourth Proportional to 276,407.52, 381,437.76 and 155,548.80

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Solution

The fourth proportional to 276,407.52, 381,437.76 and 155,548.80 is: 214,654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,407.52 : 381,437.76 = 155,548.80 : x
  2. Step 2: Convert to fraction form
    276,407.52/381,437.76 = 155,548.80/x
  3. Step 3: Cross multiply
    276,407.52x = 381,437.76 × 155,548.80
  4. Step 4: Simplify right side
    276,407.52x = 59,332,185,842.69
  5. Step 5: Solve for x
    x = 59,332,185,842.69/276,407.52
  6. Step 6: Final answer
    x = 214,654.75

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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.