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Finding the Fourth Proportional to 221,287.48, 305,402.52 and 125,808.46

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Solution

The fourth proportional to 221,287.48, 305,402.52 and 125,808.46 is: 173,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,287.48 : 305,402.52 = 125,808.46 : x
  2. Step 2: Convert to fraction form
    221,287.48/305,402.52 = 125,808.46/x
  3. Step 3: Cross multiply
    221,287.48x = 305,402.52 × 125,808.46
  4. Step 4: Simplify right side
    221,287.48x = 38,422,220,721.32
  5. Step 5: Solve for x
    x = 38,422,220,721.32/221,287.48
  6. Step 6: Final answer
    x = 173,630.34

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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.