Home / 381,895.63-527,032.65-212,129.76

Finding the Fourth Proportional to 381,895.63, 527,032.65 and 212,129.76

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Solution

The fourth proportional to 381,895.63, 527,032.65 and 212,129.76 is: 292,748.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,895.63 : 527,032.65 = 212,129.76 : x
  2. Step 2: Convert to fraction form
    381,895.63/527,032.65 = 212,129.76/x
  3. Step 3: Cross multiply
    381,895.63x = 527,032.65 × 212,129.76
  4. Step 4: Simplify right side
    381,895.63x = 111,799,309,556.66
  5. Step 5: Solve for x
    x = 111,799,309,556.66/381,895.63
  6. Step 6: Final answer
    x = 292,748.33

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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.