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Finding the Fourth Proportional to 247,351.19, 371,081.22 and 140,785.28

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Solution

The fourth proportional to 247,351.19, 371,081.22 and 140,785.28 is: 211,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,351.19 : 371,081.22 = 140,785.28 : x
  2. Step 2: Convert to fraction form
    247,351.19/371,081.22 = 140,785.28/x
  3. Step 3: Cross multiply
    247,351.19x = 371,081.22 × 140,785.28
  4. Step 4: Simplify right side
    247,351.19x = 52,242,772,468.65
  5. Step 5: Solve for x
    x = 52,242,772,468.65/247,351.19
  6. Step 6: Final answer
    x = 211,208.90

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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.