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Finding the Fourth Proportional to 409,864.60, 614,140.80 and 269,459.20

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Solution

The fourth proportional to 409,864.60, 614,140.80 and 269,459.20 is: 403,757.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,864.60 : 614,140.80 = 269,459.20 : x
  2. Step 2: Convert to fraction form
    409,864.60/614,140.80 = 269,459.20/x
  3. Step 3: Cross multiply
    409,864.60x = 614,140.80 × 269,459.20
  4. Step 4: Simplify right side
    409,864.60x = 165,485,888,655.36
  5. Step 5: Solve for x
    x = 165,485,888,655.36/409,864.60
  6. Step 6: Final answer
    x = 403,757.46

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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.