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Finding the Fourth Proportional to 354,058.91, 531,309.81 and 143,696.85

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Solution

The fourth proportional to 354,058.91, 531,309.81 and 143,696.85 is: 215,635.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,058.91 : 531,309.81 = 143,696.85 : x
  2. Step 2: Convert to fraction form
    354,058.91/531,309.81 = 143,696.85/x
  3. Step 3: Cross multiply
    354,058.91x = 531,309.81 × 143,696.85
  4. Step 4: Simplify right side
    354,058.91x = 76,347,546,071.10
  5. Step 5: Solve for x
    x = 76,347,546,071.10/354,058.91
  6. Step 6: Final answer
    x = 215,635.15

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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.