Home / 381,721.40-526,840.33-220,669.81

Finding the Fourth Proportional to 381,721.40, 526,840.33 and 220,669.81

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Solution

The fourth proportional to 381,721.40, 526,840.33 and 220,669.81 is: 304,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,721.40 : 526,840.33 = 220,669.81 : x
  2. Step 2: Convert to fraction form
    381,721.40/526,840.33 = 220,669.81/x
  3. Step 3: Cross multiply
    381,721.40x = 526,840.33 × 220,669.81
  4. Step 4: Simplify right side
    381,721.40x = 116,257,755,521.44
  5. Step 5: Solve for x
    x = 116,257,755,521.44/381,721.40
  6. Step 6: Final answer
    x = 304,561.80

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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.