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Finding the Fourth Proportional to 381,341.79, 526,251.75 and 211,575.51

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Solution

The fourth proportional to 381,341.79, 526,251.75 and 211,575.51 is: 291,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,341.79 : 526,251.75 = 211,575.51 : x
  2. Step 2: Convert to fraction form
    381,341.79/526,251.75 = 211,575.51/x
  3. Step 3: Cross multiply
    381,341.79x = 526,251.75 × 211,575.51
  4. Step 4: Simplify right side
    381,341.79x = 111,341,982,394.64
  5. Step 5: Solve for x
    x = 111,341,982,394.64/381,341.79
  6. Step 6: Final answer
    x = 291,974.25

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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.