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Finding the Fourth Proportional to 381,303.64, 526,223.96 and 220,165.48

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Solution

The fourth proportional to 381,303.64, 526,223.96 and 220,165.48 is: 303,842.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,303.64 : 526,223.96 = 220,165.48 : x
  2. Step 2: Convert to fraction form
    381,303.64/526,223.96 = 220,165.48/x
  3. Step 3: Cross multiply
    381,303.64x = 526,223.96 × 220,165.48
  4. Step 4: Simplify right side
    381,303.64x = 115,856,350,740.90
  5. Step 5: Solve for x
    x = 115,856,350,740.90/381,303.64
  6. Step 6: Final answer
    x = 303,842.76

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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.