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Finding the Fourth Proportional to 243,351.80, 335,821.92 and 135,923.39

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Solution

The fourth proportional to 243,351.80, 335,821.92 and 135,923.39 is: 187,572.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,351.80 : 335,821.92 = 135,923.39 : x
  2. Step 2: Convert to fraction form
    243,351.80/335,821.92 = 135,923.39/x
  3. Step 3: Cross multiply
    243,351.80x = 335,821.92 × 135,923.39
  4. Step 4: Simplify right side
    243,351.80x = 45,646,053,802.71
  5. Step 5: Solve for x
    x = 45,646,053,802.71/243,351.80
  6. Step 6: Final answer
    x = 187,572.29

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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.