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Finding the Fourth Proportional to 243,088.64, 335,479.18 and 135,679.60

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Solution

The fourth proportional to 243,088.64, 335,479.18 and 135,679.60 is: 187,247.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,088.64 : 335,479.18 = 135,679.60 : x
  2. Step 2: Convert to fraction form
    243,088.64/335,479.18 = 135,679.60/x
  3. Step 3: Cross multiply
    243,088.64x = 335,479.18 × 135,679.60
  4. Step 4: Simplify right side
    243,088.64x = 45,517,680,950.73
  5. Step 5: Solve for x
    x = 45,517,680,950.73/243,088.64
  6. Step 6: Final answer
    x = 187,247.26

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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.