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Finding the Fourth Proportional to 243,347.01, 335,815.36 and 135,918.60

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Solution

The fourth proportional to 243,347.01, 335,815.36 and 135,918.60 is: 187,565.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,347.01 : 335,815.36 = 135,918.60 : x
  2. Step 2: Convert to fraction form
    243,347.01/335,815.36 = 135,918.60/x
  3. Step 3: Cross multiply
    243,347.01x = 335,815.36 × 135,918.60
  4. Step 4: Simplify right side
    243,347.01x = 45,643,553,589.70
  5. Step 5: Solve for x
    x = 45,643,553,589.70/243,347.01
  6. Step 6: Final answer
    x = 187,565.71

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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.