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Finding the Fourth Proportional to 312,337.28, 431,027.80 and 169,099.74

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Solution

The fourth proportional to 312,337.28, 431,027.80 and 169,099.74 is: 233,358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,337.28 : 431,027.80 = 169,099.74 : x
  2. Step 2: Convert to fraction form
    312,337.28/431,027.80 = 169,099.74/x
  3. Step 3: Cross multiply
    312,337.28x = 431,027.80 × 169,099.74
  4. Step 4: Simplify right side
    312,337.28x = 72,886,688,912.77
  5. Step 5: Solve for x
    x = 72,886,688,912.77/312,337.28
  6. Step 6: Final answer
    x = 233,358.92

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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.