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Finding the Fourth Proportional to 220,577.76, 304,314.84 and 129,878.28

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Solution

The fourth proportional to 220,577.76, 304,314.84 and 129,878.28 is: 179,183.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,577.76 : 304,314.84 = 129,878.28 : x
  2. Step 2: Convert to fraction form
    220,577.76/304,314.84 = 129,878.28/x
  3. Step 3: Cross multiply
    220,577.76x = 304,314.84 × 129,878.28
  4. Step 4: Simplify right side
    220,577.76x = 39,523,887,997.68
  5. Step 5: Solve for x
    x = 39,523,887,997.68/220,577.76
  6. Step 6: Final answer
    x = 179,183.47

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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.