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Finding the Fourth Proportional to 217,333.80, 326,058.30 and 77,077.80

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Solution

The fourth proportional to 217,333.80, 326,058.30 and 77,077.80 is: 115,637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,333.80 : 326,058.30 = 77,077.80 : x
  2. Step 2: Convert to fraction form
    217,333.80/326,058.30 = 77,077.80/x
  3. Step 3: Cross multiply
    217,333.80x = 326,058.30 × 77,077.80
  4. Step 4: Simplify right side
    217,333.80x = 25,131,856,435.74
  5. Step 5: Solve for x
    x = 25,131,856,435.74/217,333.80
  6. Step 6: Final answer
    x = 115,637.13

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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.