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Finding the Fourth Proportional to 351,649.80, 527,474.70 and 115,016.40

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Solution

The fourth proportional to 351,649.80, 527,474.70 and 115,016.40 is: 172,524.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,649.80 : 527,474.70 = 115,016.40 : x
  2. Step 2: Convert to fraction form
    351,649.80/527,474.70 = 115,016.40/x
  3. Step 3: Cross multiply
    351,649.80x = 527,474.70 × 115,016.40
  4. Step 4: Simplify right side
    351,649.80x = 60,668,241,085.08
  5. Step 5: Solve for x
    x = 60,668,241,085.08/351,649.80
  6. Step 6: Final answer
    x = 172,524.60

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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.