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Finding the Fourth Proportional to 311,938.90, 467,908.35 and 112,265.80

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Solution

The fourth proportional to 311,938.90, 467,908.35 and 112,265.80 is: 168,398.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,938.90 : 467,908.35 = 112,265.80 : x
  2. Step 2: Convert to fraction form
    311,938.90/467,908.35 = 112,265.80/x
  3. Step 3: Cross multiply
    311,938.90x = 467,908.35 × 112,265.80
  4. Step 4: Simplify right side
    311,938.90x = 52,530,105,239.43
  5. Step 5: Solve for x
    x = 52,530,105,239.43/311,938.90
  6. Step 6: Final answer
    x = 168,398.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.