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Finding the Fourth Proportional to 381,835, 526,932.30 and 212,084.92

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Solution

The fourth proportional to 381,835, 526,932.30 and 212,084.92 is: 292,677.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,835 : 526,932.30 = 212,084.92 : x
  2. Step 2: Convert to fraction form
    381,835/526,932.30 = 212,084.92/x
  3. Step 3: Cross multiply
    381,835x = 526,932.30 × 212,084.92
  4. Step 4: Simplify right side
    381,835x = 111,754,394,690.92
  5. Step 5: Solve for x
    x = 111,754,394,690.92/381,835
  6. Step 6: Final answer
    x = 292,677.19

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1.5x scale

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.