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Finding the Fourth Proportional to 243,784.89, 336,425.30 and 136,364.92

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Solution

The fourth proportional to 243,784.89, 336,425.30 and 136,364.92 is: 188,184.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,784.89 : 336,425.30 = 136,364.92 : x
  2. Step 2: Convert to fraction form
    243,784.89/336,425.30 = 136,364.92/x
  3. Step 3: Cross multiply
    243,784.89x = 336,425.30 × 136,364.92
  4. Step 4: Simplify right side
    243,784.89x = 45,876,609,120.48
  5. Step 5: Solve for x
    x = 45,876,609,120.48/243,784.89
  6. Step 6: Final answer
    x = 188,184.79

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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.