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Finding the Fourth Proportional to 409,866.80, 614,137.80 and 231,844.40

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Solution

The fourth proportional to 409,866.80, 614,137.80 and 231,844.40 is: 347,391.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,866.80 : 614,137.80 = 231,844.40 : x
  2. Step 2: Convert to fraction form
    409,866.80/614,137.80 = 231,844.40/x
  3. Step 3: Cross multiply
    409,866.80x = 614,137.80 × 231,844.40
  4. Step 4: Simplify right side
    409,866.80x = 142,384,409,758.32
  5. Step 5: Solve for x
    x = 142,384,409,758.32/409,866.80
  6. Step 6: Final answer
    x = 347,391.91

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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.