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Finding the Fourth Proportional to 276,704.60, 415,056.90 and 156,638.30

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Solution

The fourth proportional to 276,704.60, 415,056.90 and 156,638.30 is: 234,957.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,704.60 : 415,056.90 = 156,638.30 : x
  2. Step 2: Convert to fraction form
    276,704.60/415,056.90 = 156,638.30/x
  3. Step 3: Cross multiply
    276,704.60x = 415,056.90 × 156,638.30
  4. Step 4: Simplify right side
    276,704.60x = 65,013,807,219.27
  5. Step 5: Solve for x
    x = 65,013,807,219.27/276,704.60
  6. Step 6: Final answer
    x = 234,957.45

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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.