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Finding the Fourth Proportional to 276,681.60, 415,022.40 and 156,615.30

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Solution

The fourth proportional to 276,681.60, 415,022.40 and 156,615.30 is: 234,922.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,681.60 : 415,022.40 = 156,615.30 : x
  2. Step 2: Convert to fraction form
    276,681.60/415,022.40 = 156,615.30/x
  3. Step 3: Cross multiply
    276,681.60x = 415,022.40 × 156,615.30
  4. Step 4: Simplify right side
    276,681.60x = 64,998,857,682.72
  5. Step 5: Solve for x
    x = 64,998,857,682.72/276,681.60
  6. Step 6: Final answer
    x = 234,922.95

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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.