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Finding the Fourth Proportional to 285,673.20, 428,218.20 and 167,283.60

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Solution

The fourth proportional to 285,673.20, 428,218.20 and 167,283.60 is: 250,754.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,673.20 : 428,218.20 = 167,283.60 : x
  2. Step 2: Convert to fraction form
    285,673.20/428,218.20 = 167,283.60/x
  3. Step 3: Cross multiply
    285,673.20x = 428,218.20 × 167,283.60
  4. Step 4: Simplify right side
    285,673.20x = 71,633,882,081.52
  5. Step 5: Solve for x
    x = 71,633,882,081.52/285,673.20
  6. Step 6: Final answer
    x = 250,754.65

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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.