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Finding the Fourth Proportional to 272,990.18, 409,486.32 and 83,449.85

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Solution

The fourth proportional to 272,990.18, 409,486.32 and 83,449.85 is: 125,175.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,990.18 : 409,486.32 = 83,449.85 : x
  2. Step 2: Convert to fraction form
    272,990.18/409,486.32 = 83,449.85/x
  3. Step 3: Cross multiply
    272,990.18x = 409,486.32 × 83,449.85
  4. Step 4: Simplify right side
    272,990.18x = 34,171,569,933.62
  5. Step 5: Solve for x
    x = 34,171,569,933.62/272,990.18
  6. Step 6: Final answer
    x = 125,175.09

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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.