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Finding the Fourth Proportional to 311,026.50, 429,268.41 and 235,443.78

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Solution

The fourth proportional to 311,026.50, 429,268.41 and 235,443.78 is: 324,951.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,026.50 : 429,268.41 = 235,443.78 : x
  2. Step 2: Convert to fraction form
    311,026.50/429,268.41 = 235,443.78/x
  3. Step 3: Cross multiply
    311,026.50x = 429,268.41 × 235,443.78
  4. Step 4: Simplify right side
    311,026.50x = 101,068,577,084.99
  5. Step 5: Solve for x
    x = 101,068,577,084.99/311,026.50
  6. Step 6: Final answer
    x = 324,951.66

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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.