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Finding the Fourth Proportional to 311,258.96, 429,489.96 and 175,285.76

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Solution

The fourth proportional to 311,258.96, 429,489.96 and 175,285.76 is: 241,867.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,258.96 : 429,489.96 = 175,285.76 : x
  2. Step 2: Convert to fraction form
    311,258.96/429,489.96 = 175,285.76/x
  3. Step 3: Cross multiply
    311,258.96x = 429,489.96 × 175,285.76
  4. Step 4: Simplify right side
    311,258.96x = 75,283,474,050.97
  5. Step 5: Solve for x
    x = 75,283,474,050.97/311,258.96
  6. Step 6: Final answer
    x = 241,867.65

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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.