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Finding the Fourth Proportional to 269,261.70, 403,892.55 and 79,728.90

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Solution

The fourth proportional to 269,261.70, 403,892.55 and 79,728.90 is: 119,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,261.70 : 403,892.55 = 79,728.90 : x
  2. Step 2: Convert to fraction form
    269,261.70/403,892.55 = 79,728.90/x
  3. Step 3: Cross multiply
    269,261.70x = 403,892.55 × 79,728.90
  4. Step 4: Simplify right side
    269,261.70x = 32,201,908,729.70
  5. Step 5: Solve for x
    x = 32,201,908,729.70/269,261.70
  6. Step 6: Final answer
    x = 119,593.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.