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Finding the Fourth Proportional to 202,317.55, 279,149.29 and 129,687.28

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Solution

The fourth proportional to 202,317.55, 279,149.29 and 129,687.28 is: 178,937.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,317.55 : 279,149.29 = 129,687.28 : x
  2. Step 2: Convert to fraction form
    202,317.55/279,149.29 = 129,687.28/x
  3. Step 3: Cross multiply
    202,317.55x = 279,149.29 × 129,687.28
  4. Step 4: Simplify right side
    202,317.55x = 36,202,111,111.94
  5. Step 5: Solve for x
    x = 36,202,111,111.94/202,317.55
  6. Step 6: Final answer
    x = 178,937.08

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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.