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Finding the Fourth Proportional to 221,059.52, 305,051.28 and 125,553.68

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Solution

The fourth proportional to 221,059.52, 305,051.28 and 125,553.68 is: 173,257.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,059.52 : 305,051.28 = 125,553.68 : x
  2. Step 2: Convert to fraction form
    221,059.52/305,051.28 = 125,553.68/x
  3. Step 3: Cross multiply
    221,059.52x = 305,051.28 × 125,553.68
  4. Step 4: Simplify right side
    221,059.52x = 38,300,310,792.71
  5. Step 5: Solve for x
    x = 38,300,310,792.71/221,059.52
  6. Step 6: Final answer
    x = 173,257.91

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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.