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Finding the Fourth Proportional to 381,328.06, 526,228.02 and 220,179.58

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Solution

The fourth proportional to 381,328.06, 526,228.02 and 220,179.58 is: 303,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,328.06 : 526,228.02 = 220,179.58 : x
  2. Step 2: Convert to fraction form
    381,328.06/526,228.02 = 220,179.58/x
  3. Step 3: Cross multiply
    381,328.06x = 526,228.02 × 220,179.58
  4. Step 4: Simplify right side
    381,328.06x = 115,864,664,427.83
  5. Step 5: Solve for x
    x = 115,864,664,427.83/381,328.06
  6. Step 6: Final answer
    x = 303,845.10

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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.