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Finding the Fourth Proportional to 247,857.80, 342,042.91 and 140,448.31

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Solution

The fourth proportional to 247,857.80, 342,042.91 and 140,448.31 is: 193,818.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,857.80 : 342,042.91 = 140,448.31 : x
  2. Step 2: Convert to fraction form
    247,857.80/342,042.91 = 140,448.31/x
  3. Step 3: Cross multiply
    247,857.80x = 342,042.91 × 140,448.31
  4. Step 4: Simplify right side
    247,857.80x = 48,039,347,450.75
  5. Step 5: Solve for x
    x = 48,039,347,450.75/247,857.80
  6. Step 6: Final answer
    x = 193,818.18

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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.