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Finding the Fourth Proportional to 285,608.13, 428,448.65 and 95,987.13

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Solution

The fourth proportional to 285,608.13, 428,448.65 and 95,987.13 is: 143,992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,608.13 : 428,448.65 = 95,987.13 : x
  2. Step 2: Convert to fraction form
    285,608.13/428,448.65 = 95,987.13/x
  3. Step 3: Cross multiply
    285,608.13x = 428,448.65 × 95,987.13
  4. Step 4: Simplify right side
    285,608.13x = 41,125,555,785.94
  5. Step 5: Solve for x
    x = 41,125,555,785.94/285,608.13
  6. Step 6: Final answer
    x = 143,992.95

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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.