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Finding the Fourth Proportional to 243,356.52, 335,828.46 and 135,928.08

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Solution

The fourth proportional to 243,356.52, 335,828.46 and 135,928.08 is: 187,578.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,356.52 : 335,828.46 = 135,928.08 : x
  2. Step 2: Convert to fraction form
    243,356.52/335,828.46 = 135,928.08/x
  3. Step 3: Cross multiply
    243,356.52x = 335,828.46 × 135,928.08
  4. Step 4: Simplify right side
    243,356.52x = 45,648,517,777.16
  5. Step 5: Solve for x
    x = 45,648,517,777.16/243,356.52
  6. Step 6: Final answer
    x = 187,578.77

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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.