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Finding the Fourth Proportional to 311,793.90, 430,275.90 and 168,553.95

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Solution

The fourth proportional to 311,793.90, 430,275.90 and 168,553.95 is: 232,604.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,793.90 : 430,275.90 = 168,553.95 : x
  2. Step 2: Convert to fraction form
    311,793.90/430,275.90 = 168,553.95/x
  3. Step 3: Cross multiply
    311,793.90x = 430,275.90 × 168,553.95
  4. Step 4: Simplify right side
    311,793.90x = 72,524,702,534.81
  5. Step 5: Solve for x
    x = 72,524,702,534.81/311,793.90
  6. Step 6: Final answer
    x = 232,604.62

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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.