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Finding the Fourth Proportional to 231,610, 319,621.80 and 125,626

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Solution

The fourth proportional to 231,610, 319,621.80 and 125,626 is: 173,363.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,610 : 319,621.80 = 125,626 : x
  2. Step 2: Convert to fraction form
    231,610/319,621.80 = 125,626/x
  3. Step 3: Cross multiply
    231,610x = 319,621.80 × 125,626
  4. Step 4: Simplify right side
    231,610x = 40,152,808,246.80
  5. Step 5: Solve for x
    x = 40,152,808,246.80/231,610
  6. Step 6: Final answer
    x = 173,363.88

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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.