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Finding the Fourth Proportional to 340,331.70, 469,639.92 and 187,340.03

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Solution

The fourth proportional to 340,331.70, 469,639.92 and 187,340.03 is: 258,519.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,331.70 : 469,639.92 = 187,340.03 : x
  2. Step 2: Convert to fraction form
    340,331.70/469,639.92 = 187,340.03/x
  3. Step 3: Cross multiply
    340,331.70x = 469,639.92 × 187,340.03
  4. Step 4: Simplify right side
    340,331.70x = 87,982,356,702.00
  5. Step 5: Solve for x
    x = 87,982,356,702.00/340,331.70
  6. Step 6: Final answer
    x = 258,519.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.