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Finding the Fourth Proportional to 266,082.64, 399,190.20 and 79,089.04

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Solution

The fourth proportional to 266,082.64, 399,190.20 and 79,089.04 is: 118,653.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,082.64 : 399,190.20 = 79,089.04 : x
  2. Step 2: Convert to fraction form
    266,082.64/399,190.20 = 79,089.04/x
  3. Step 3: Cross multiply
    266,082.64x = 399,190.20 × 79,089.04
  4. Step 4: Simplify right side
    266,082.64x = 31,571,569,695.41
  5. Step 5: Solve for x
    x = 31,571,569,695.41/266,082.64
  6. Step 6: Final answer
    x = 118,653.25

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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.