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Finding the Fourth Proportional to 221,203.90, 305,248.23 and 125,697.34

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Solution

The fourth proportional to 221,203.90, 305,248.23 and 125,697.34 is: 173,454.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,203.90 : 305,248.23 = 125,697.34 : x
  2. Step 2: Convert to fraction form
    221,203.90/305,248.23 = 125,697.34/x
  3. Step 3: Cross multiply
    221,203.90x = 305,248.23 × 125,697.34
  4. Step 4: Simplify right side
    221,203.90x = 38,368,890,550.71
  5. Step 5: Solve for x
    x = 38,368,890,550.71/221,203.90
  6. Step 6: Final answer
    x = 173,454.86

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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.