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Finding the Fourth Proportional to 276,667.10, 415,000.65 and 156,600.80

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Solution

The fourth proportional to 276,667.10, 415,000.65 and 156,600.80 is: 234,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,667.10 : 415,000.65 = 156,600.80 : x
  2. Step 2: Convert to fraction form
    276,667.10/415,000.65 = 156,600.80/x
  3. Step 3: Cross multiply
    276,667.10x = 415,000.65 × 156,600.80
  4. Step 4: Simplify right side
    276,667.10x = 64,989,433,790.52
  5. Step 5: Solve for x
    x = 64,989,433,790.52/276,667.10
  6. Step 6: Final answer
    x = 234,901.20

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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.