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Finding the Fourth Proportional to 243,425.86, 335,943.45 and 135,996.47

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Solution

The fourth proportional to 243,425.86, 335,943.45 and 135,996.47 is: 187,683.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,425.86 : 335,943.45 = 135,996.47 : x
  2. Step 2: Convert to fraction form
    243,425.86/335,943.45 = 135,996.47/x
  3. Step 3: Cross multiply
    243,425.86x = 335,943.45 × 135,996.47
  4. Step 4: Simplify right side
    243,425.86x = 45,687,122,639.64
  5. Step 5: Solve for x
    x = 45,687,122,639.64/243,425.86
  6. Step 6: Final answer
    x = 187,683.94

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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.