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Finding the Fourth Proportional to 381,309.60, 526,270.24 and 211,598.40

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Solution

The fourth proportional to 381,309.60, 526,270.24 and 211,598.40 is: 292,040.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,309.60 : 526,270.24 = 211,598.40 : x
  2. Step 2: Convert to fraction form
    381,309.60/526,270.24 = 211,598.40/x
  3. Step 3: Cross multiply
    381,309.60x = 526,270.24 × 211,598.40
  4. Step 4: Simplify right side
    381,309.60x = 111,357,940,751.62
  5. Step 5: Solve for x
    x = 111,357,940,751.62/381,309.60
  6. Step 6: Final answer
    x = 292,040.75

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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.