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Finding the Fourth Proportional to 290,015.31, 435,195.18 and 156,892.62

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Solution

The fourth proportional to 290,015.31, 435,195.18 and 156,892.62 is: 235,432.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,015.31 : 435,195.18 = 156,892.62 : x
  2. Step 2: Convert to fraction form
    290,015.31/435,195.18 = 156,892.62/x
  3. Step 3: Cross multiply
    290,015.31x = 435,195.18 × 156,892.62
  4. Step 4: Simplify right side
    290,015.31x = 68,278,912,001.57
  5. Step 5: Solve for x
    x = 68,278,912,001.57/290,015.31
  6. Step 6: Final answer
    x = 235,432.09

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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.