Home / 217,578.80-326,143.66-91,292.40

Finding the Fourth Proportional to 217,578.80, 326,143.66 and 91,292.40

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Solution

The fourth proportional to 217,578.80, 326,143.66 and 91,292.40 is: 136,844.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,578.80 : 326,143.66 = 91,292.40 : x
  2. Step 2: Convert to fraction form
    217,578.80/326,143.66 = 91,292.40/x
  3. Step 3: Cross multiply
    217,578.80x = 326,143.66 × 91,292.40
  4. Step 4: Simplify right side
    217,578.80x = 29,774,437,466.18
  5. Step 5: Solve for x
    x = 29,774,437,466.18/217,578.80
  6. Step 6: Final answer
    x = 136,844.39

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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.