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Finding the Fourth Proportional to 221,291.32, 305,380.63 and 125,798.04

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Solution

The fourth proportional to 221,291.32, 305,380.63 and 125,798.04 is: 173,600.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,291.32 : 305,380.63 = 125,798.04 : x
  2. Step 2: Convert to fraction form
    221,291.32/305,380.63 = 125,798.04/x
  3. Step 3: Cross multiply
    221,291.32x = 305,380.63 × 125,798.04
  4. Step 4: Simplify right side
    221,291.32x = 38,416,284,707.97
  5. Step 5: Solve for x
    x = 38,416,284,707.97/221,291.32
  6. Step 6: Final answer
    x = 173,600.50

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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.