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Finding the Fourth Proportional to 269,399.40, 403,953.30 and 111,643.80

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Solution

The fourth proportional to 269,399.40, 403,953.30 and 111,643.80 is: 167,405.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,399.40 : 403,953.30 = 111,643.80 : x
  2. Step 2: Convert to fraction form
    269,399.40/403,953.30 = 111,643.80/x
  3. Step 3: Cross multiply
    269,399.40x = 403,953.30 × 111,643.80
  4. Step 4: Simplify right side
    269,399.40x = 45,098,881,434.54
  5. Step 5: Solve for x
    x = 45,098,881,434.54/269,399.40
  6. Step 6: Final answer
    x = 167,405.28

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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.