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Finding the Fourth Proportional to 311,246.96, 429,561.90 and 175,307.76

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Solution

The fourth proportional to 311,246.96, 429,561.90 and 175,307.76 is: 241,947.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,246.96 : 429,561.90 = 175,307.76 : x
  2. Step 2: Convert to fraction form
    311,246.96/429,561.90 = 175,307.76/x
  3. Step 3: Cross multiply
    311,246.96x = 429,561.90 × 175,307.76
  4. Step 4: Simplify right side
    311,246.96x = 75,305,534,470.34
  5. Step 5: Solve for x
    x = 75,305,534,470.34/311,246.96
  6. Step 6: Final answer
    x = 241,947.86

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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.