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Finding the Fourth Proportional to 279,617.60, 385,912.54 and 202,344.14

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Solution

The fourth proportional to 279,617.60, 385,912.54 and 202,344.14 is: 279,264.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,617.60 : 385,912.54 = 202,344.14 : x
  2. Step 2: Convert to fraction form
    279,617.60/385,912.54 = 202,344.14/x
  3. Step 3: Cross multiply
    279,617.60x = 385,912.54 × 202,344.14
  4. Step 4: Simplify right side
    279,617.60x = 78,087,141,021.52
  5. Step 5: Solve for x
    x = 78,087,141,021.52/279,617.60
  6. Step 6: Final answer
    x = 279,264.04

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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.