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Finding the Fourth Proportional to 373,294.20, 559,163.70 and 311,086.20

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Solution

The fourth proportional to 373,294.20, 559,163.70 and 311,086.20 is: 465,981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,294.20 : 559,163.70 = 311,086.20 : x
  2. Step 2: Convert to fraction form
    373,294.20/559,163.70 = 311,086.20/x
  3. Step 3: Cross multiply
    373,294.20x = 559,163.70 × 311,086.20
  4. Step 4: Simplify right side
    373,294.20x = 173,948,110,610.94
  5. Step 5: Solve for x
    x = 173,948,110,610.94/373,294.20
  6. Step 6: Final answer
    x = 465,981.28

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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.