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Finding the Fourth Proportional to 220,372.64, 304,110.96 and 129,739.04

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Solution

The fourth proportional to 220,372.64, 304,110.96 and 129,739.04 is: 179,037.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,372.64 : 304,110.96 = 129,739.04 : x
  2. Step 2: Convert to fraction form
    220,372.64/304,110.96 = 129,739.04/x
  3. Step 3: Cross multiply
    220,372.64x = 304,110.96 × 129,739.04
  4. Step 4: Simplify right side
    220,372.64x = 39,455,064,003.88
  5. Step 5: Solve for x
    x = 39,455,064,003.88/220,372.64
  6. Step 6: Final answer
    x = 179,037.94

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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.