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Finding the Fourth Proportional to 345,058.74, 517,640.36 and 108,379.17

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Solution

The fourth proportional to 345,058.74, 517,640.36 and 108,379.17 is: 162,585.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,058.74 : 517,640.36 = 108,379.17 : x
  2. Step 2: Convert to fraction form
    345,058.74/517,640.36 = 108,379.17/x
  3. Step 3: Cross multiply
    345,058.74x = 517,640.36 × 108,379.17
  4. Step 4: Simplify right side
    345,058.74x = 56,101,432,033.41
  5. Step 5: Solve for x
    x = 56,101,432,033.41/345,058.74
  6. Step 6: Final answer
    x = 162,585.16

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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.