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Finding the Fourth Proportional to 409,719.40, 614,579.10 and 114,231.40

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Solution

The fourth proportional to 409,719.40, 614,579.10 and 114,231.40 is: 171,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,719.40 : 614,579.10 = 114,231.40 : x
  2. Step 2: Convert to fraction form
    409,719.40/614,579.10 = 114,231.40/x
  3. Step 3: Cross multiply
    409,719.40x = 614,579.10 × 114,231.40
  4. Step 4: Simplify right side
    409,719.40x = 70,204,231,003.74
  5. Step 5: Solve for x
    x = 70,204,231,003.74/409,719.40
  6. Step 6: Final answer
    x = 171,347.10

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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.