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Finding the Fourth Proportional to 269,459.60, 403,930.20 and 209,454.80

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Solution

The fourth proportional to 269,459.60, 403,930.20 and 209,454.80 is: 313,980.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,459.60 : 403,930.20 = 209,454.80 : x
  2. Step 2: Convert to fraction form
    269,459.60/403,930.20 = 209,454.80/x
  3. Step 3: Cross multiply
    269,459.60x = 403,930.20 × 209,454.80
  4. Step 4: Simplify right side
    269,459.60x = 84,605,119,254.96
  5. Step 5: Solve for x
    x = 84,605,119,254.96/269,459.60
  6. Step 6: Final answer
    x = 313,980.72

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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.