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Finding the Fourth Proportional to 285,507.39, 428,300.40 and 95,982.45

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Solution

The fourth proportional to 285,507.39, 428,300.40 and 95,982.45 is: 143,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,507.39 : 428,300.40 = 95,982.45 : x
  2. Step 2: Convert to fraction form
    285,507.39/428,300.40 = 95,982.45/x
  3. Step 3: Cross multiply
    285,507.39x = 428,300.40 × 95,982.45
  4. Step 4: Simplify right side
    285,507.39x = 41,109,321,727.98
  5. Step 5: Solve for x
    x = 41,109,321,727.98/285,507.39
  6. Step 6: Final answer
    x = 143,986.89

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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.