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Finding the Fourth Proportional to 243,374.32, 335,823.36 and 135,930.64

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Solution

The fourth proportional to 243,374.32, 335,823.36 and 135,930.64 is: 187,565.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,374.32 : 335,823.36 = 135,930.64 : x
  2. Step 2: Convert to fraction form
    243,374.32/335,823.36 = 135,930.64/x
  3. Step 3: Cross multiply
    243,374.32x = 335,823.36 × 135,930.64
  4. Step 4: Simplify right side
    243,374.32x = 45,648,684,251.75
  5. Step 5: Solve for x
    x = 45,648,684,251.75/243,374.32
  6. Step 6: Final answer
    x = 187,565.74

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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.