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Finding the Fourth Proportional to 250,553.56, 345,763.74 and 137,378.20

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Solution

The fourth proportional to 250,553.56, 345,763.74 and 137,378.20 is: 189,581.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,553.56 : 345,763.74 = 137,378.20 : x
  2. Step 2: Convert to fraction form
    250,553.56/345,763.74 = 137,378.20/x
  3. Step 3: Cross multiply
    250,553.56x = 345,763.74 × 137,378.20
  4. Step 4: Simplify right side
    250,553.56x = 47,500,400,226.47
  5. Step 5: Solve for x
    x = 47,500,400,226.47/250,553.56
  6. Step 6: Final answer
    x = 189,581.82

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1.5x scale

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.