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Finding the Fourth Proportional to 215,103.52, 321,710.82 and 191,576.80

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Solution

The fourth proportional to 215,103.52, 321,710.82 and 191,576.80 is: 286,524.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,103.52 : 321,710.82 = 191,576.80 : x
  2. Step 2: Convert to fraction form
    215,103.52/321,710.82 = 191,576.80/x
  3. Step 3: Cross multiply
    215,103.52x = 321,710.82 × 191,576.80
  4. Step 4: Simplify right side
    215,103.52x = 61,632,329,420.98
  5. Step 5: Solve for x
    x = 61,632,329,420.98/215,103.52
  6. Step 6: Final answer
    x = 286,524.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.