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Finding the Fourth Proportional to 247,988.36, 342,231 and 140,554.02

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Solution

The fourth proportional to 247,988.36, 342,231 and 140,554.02 is: 193,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,988.36 : 342,231 = 140,554.02 : x
  2. Step 2: Convert to fraction form
    247,988.36/342,231 = 140,554.02/x
  3. Step 3: Cross multiply
    247,988.36x = 342,231 × 140,554.02
  4. Step 4: Simplify right side
    247,988.36x = 48,101,942,818.62
  5. Step 5: Solve for x
    x = 48,101,942,818.62/247,988.36
  6. Step 6: Final answer
    x = 193,968.55

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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.