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Finding the Fourth Proportional to 243,389.40, 335,877.37 and 135,959.43

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Solution

The fourth proportional to 243,389.40, 335,877.37 and 135,959.43 is: 187,624.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,389.40 : 335,877.37 = 135,959.43 : x
  2. Step 2: Convert to fraction form
    243,389.40/335,877.37 = 135,959.43/x
  3. Step 3: Cross multiply
    243,389.40x = 335,877.37 × 135,959.43
  4. Step 4: Simplify right side
    243,389.40x = 45,665,696,694.74
  5. Step 5: Solve for x
    x = 45,665,696,694.74/243,389.40
  6. Step 6: Final answer
    x = 187,624.02

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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.