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Finding the Fourth Proportional to 221,376.32, 305,486.88 and 125,906.24

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Solution

The fourth proportional to 221,376.32, 305,486.88 and 125,906.24 is: 173,743.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,376.32 : 305,486.88 = 125,906.24 : x
  2. Step 2: Convert to fraction form
    221,376.32/305,486.88 = 125,906.24/x
  3. Step 3: Cross multiply
    221,376.32x = 305,486.88 × 125,906.24
  4. Step 4: Simplify right side
    221,376.32x = 38,462,704,430.13
  5. Step 5: Solve for x
    x = 38,462,704,430.13/221,376.32
  6. Step 6: Final answer
    x = 173,743.54

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1.5x scale

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.