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Finding the Fourth Proportional to 221,374.31, 305,487.49 and 130,759.61

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Solution

The fourth proportional to 221,374.31, 305,487.49 and 130,759.61 is: 180,442.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,374.31 : 305,487.49 = 130,759.61 : x
  2. Step 2: Convert to fraction form
    221,374.31/305,487.49 = 130,759.61/x
  3. Step 3: Cross multiply
    221,374.31x = 305,487.49 × 130,759.61
  4. Step 4: Simplify right side
    221,374.31x = 39,945,425,052.28
  5. Step 5: Solve for x
    x = 39,945,425,052.28/221,374.31
  6. Step 6: Final answer
    x = 180,442.91

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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.