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Finding the Fourth Proportional to 209,312.66, 313,979.85 and 69,082.22

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Solution

The fourth proportional to 209,312.66, 313,979.85 and 69,082.22 is: 103,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,312.66 : 313,979.85 = 69,082.22 : x
  2. Step 2: Convert to fraction form
    209,312.66/313,979.85 = 69,082.22/x
  3. Step 3: Cross multiply
    209,312.66x = 313,979.85 × 69,082.22
  4. Step 4: Simplify right side
    209,312.66x = 21,690,425,073.27
  5. Step 5: Solve for x
    x = 21,690,425,073.27/209,312.66
  6. Step 6: Final answer
    x = 103,626.91

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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.