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Finding the Fourth Proportional to 311,309.68, 429,578.22 and 183,960.94

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Solution

The fourth proportional to 311,309.68, 429,578.22 and 183,960.94 is: 253,848.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,309.68 : 429,578.22 = 183,960.94 : x
  2. Step 2: Convert to fraction form
    311,309.68/429,578.22 = 183,960.94/x
  3. Step 3: Cross multiply
    311,309.68x = 429,578.22 × 183,960.94
  4. Step 4: Simplify right side
    311,309.68x = 79,025,613,154.73
  5. Step 5: Solve for x
    x = 79,025,613,154.73/311,309.68
  6. Step 6: Final answer
    x = 253,848.88

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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.