Home / 353,266.41-487,256.97-217,121.61

Finding the Fourth Proportional to 353,266.41, 487,256.97 and 217,121.61

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Solution

The fourth proportional to 353,266.41, 487,256.97 and 217,121.61 is: 299,473.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,266.41 : 487,256.97 = 217,121.61 : x
  2. Step 2: Convert to fraction form
    353,266.41/487,256.97 = 217,121.61/x
  3. Step 3: Cross multiply
    353,266.41x = 487,256.97 × 217,121.61
  4. Step 4: Simplify right side
    353,266.41x = 105,794,017,810.12
  5. Step 5: Solve for x
    x = 105,794,017,810.12/353,266.41
  6. Step 6: Final answer
    x = 299,473.75

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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.