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Finding the Fourth Proportional to 269,130.80, 403,694.16 and 69,434.21

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Solution

The fourth proportional to 269,130.80, 403,694.16 and 69,434.21 is: 104,150.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,130.80 : 403,694.16 = 69,434.21 : x
  2. Step 2: Convert to fraction form
    269,130.80/403,694.16 = 69,434.21/x
  3. Step 3: Cross multiply
    269,130.80x = 403,694.16 × 69,434.21
  4. Step 4: Simplify right side
    269,130.80x = 28,030,183,062.74
  5. Step 5: Solve for x
    x = 28,030,183,062.74/269,130.80
  6. Step 6: Final answer
    x = 104,150.78

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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.