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Finding the Fourth Proportional to 288,389.04, 397,919.08 and 161,045.04

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Solution

The fourth proportional to 288,389.04, 397,919.08 and 161,045.04 is: 222,209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,389.04 : 397,919.08 = 161,045.04 : x
  2. Step 2: Convert to fraction form
    288,389.04/397,919.08 = 161,045.04/x
  3. Step 3: Cross multiply
    288,389.04x = 397,919.08 × 161,045.04
  4. Step 4: Simplify right side
    288,389.04x = 64,082,894,155.36
  5. Step 5: Solve for x
    x = 64,082,894,155.36/288,389.04
  6. Step 6: Final answer
    x = 222,209.88

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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.