Home / 217,718.49-300,451.30-122,225.36

Finding the Fourth Proportional to 217,718.49, 300,451.30 and 122,225.36

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Solution

The fourth proportional to 217,718.49, 300,451.30 and 122,225.36 is: 168,670.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,718.49 : 300,451.30 = 122,225.36 : x
  2. Step 2: Convert to fraction form
    217,718.49/300,451.30 = 122,225.36/x
  3. Step 3: Cross multiply
    217,718.49x = 300,451.30 × 122,225.36
  4. Step 4: Simplify right side
    217,718.49x = 36,722,768,750.53
  5. Step 5: Solve for x
    x = 36,722,768,750.53/217,718.49
  6. Step 6: Final answer
    x = 168,670.88

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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.