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Finding the Fourth Proportional to 381,807.39, 526,886.60 and 212,035.71

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Solution

The fourth proportional to 381,807.39, 526,886.60 and 212,035.71 is: 292,605.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,807.39 : 526,886.60 = 212,035.71 : x
  2. Step 2: Convert to fraction form
    381,807.39/526,886.60 = 212,035.71/x
  3. Step 3: Cross multiply
    381,807.39x = 526,886.60 × 212,035.71
  4. Step 4: Simplify right side
    381,807.39x = 111,718,773,260.31
  5. Step 5: Solve for x
    x = 111,718,773,260.31/381,807.39
  6. Step 6: Final answer
    x = 292,605.06

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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.