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Finding the Fourth Proportional to 269,643.60, 403,930.80 and 236,401.20

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Solution

The fourth proportional to 269,643.60, 403,930.80 and 236,401.20 is: 354,133.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,643.60 : 403,930.80 = 236,401.20 : x
  2. Step 2: Convert to fraction form
    269,643.60/403,930.80 = 236,401.20/x
  3. Step 3: Cross multiply
    269,643.60x = 403,930.80 × 236,401.20
  4. Step 4: Simplify right side
    269,643.60x = 95,489,725,836.96
  5. Step 5: Solve for x
    x = 95,489,725,836.96/269,643.60
  6. Step 6: Final answer
    x = 354,133.11

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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.