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Finding the Fourth Proportional to 316,770.50, 437,154.17 and 173,530.50

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Solution

The fourth proportional to 316,770.50, 437,154.17 and 173,530.50 is: 239,478.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,770.50 : 437,154.17 = 173,530.50 : x
  2. Step 2: Convert to fraction form
    316,770.50/437,154.17 = 173,530.50/x
  3. Step 3: Cross multiply
    316,770.50x = 437,154.17 × 173,530.50
  4. Step 4: Simplify right side
    316,770.50x = 75,859,581,649.20
  5. Step 5: Solve for x
    x = 75,859,581,649.20/316,770.50
  6. Step 6: Final answer
    x = 239,478.05

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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.