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Finding the Fourth Proportional to 381,615.16, 526,602.52 and 211,835.92

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Solution

The fourth proportional to 381,615.16, 526,602.52 and 211,835.92 is: 292,318.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,615.16 : 526,602.52 = 211,835.92 : x
  2. Step 2: Convert to fraction form
    381,615.16/526,602.52 = 211,835.92/x
  3. Step 3: Cross multiply
    381,615.16x = 526,602.52 × 211,835.92
  4. Step 4: Simplify right side
    381,615.16x = 111,553,329,298.52
  5. Step 5: Solve for x
    x = 111,553,329,298.52/381,615.16
  6. Step 6: Final answer
    x = 292,318.91

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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.