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Finding the Fourth Proportional to 201,432.80, 301,711.80 and 122,700.80

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Solution

The fourth proportional to 201,432.80, 301,711.80 and 122,700.80 is: 183,784.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,432.80 : 301,711.80 = 122,700.80 : x
  2. Step 2: Convert to fraction form
    201,432.80/301,711.80 = 122,700.80/x
  3. Step 3: Cross multiply
    201,432.80x = 301,711.80 × 122,700.80
  4. Step 4: Simplify right side
    201,432.80x = 37,020,279,229.44
  5. Step 5: Solve for x
    x = 37,020,279,229.44/201,432.80
  6. Step 6: Final answer
    x = 183,784.76

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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.