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Finding the Fourth Proportional to 231,388.80, 347,212.80 and 98,246.40

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Solution

The fourth proportional to 231,388.80, 347,212.80 and 98,246.40 is: 147,424.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,388.80 : 347,212.80 = 98,246.40 : x
  2. Step 2: Convert to fraction form
    231,388.80/347,212.80 = 98,246.40/x
  3. Step 3: Cross multiply
    231,388.80x = 347,212.80 × 98,246.40
  4. Step 4: Simplify right side
    231,388.80x = 34,112,407,633.92
  5. Step 5: Solve for x
    x = 34,112,407,633.92/231,388.80
  6. Step 6: Final answer
    x = 147,424.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.