Home / 217,521.87-300,182.22-122,030.61

Finding the Fourth Proportional to 217,521.87, 300,182.22 and 122,030.61

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Solution

The fourth proportional to 217,521.87, 300,182.22 and 122,030.61 is: 168,403.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,521.87 : 300,182.22 = 122,030.61 : x
  2. Step 2: Convert to fraction form
    217,521.87/300,182.22 = 122,030.61/x
  3. Step 3: Cross multiply
    217,521.87x = 300,182.22 × 122,030.61
  4. Step 4: Simplify right side
    217,521.87x = 36,631,419,417.75
  5. Step 5: Solve for x
    x = 36,631,419,417.75/217,521.87
  6. Step 6: Final answer
    x = 168,403.39

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1.5x scale

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.