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Finding the Fourth Proportional to 285,517.88, 428,283.71 and 95,980.71

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Solution

The fourth proportional to 285,517.88, 428,283.71 and 95,980.71 is: 143,973.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,517.88 : 428,283.71 = 95,980.71 : x
  2. Step 2: Convert to fraction form
    285,517.88/428,283.71 = 95,980.71/x
  3. Step 3: Cross multiply
    285,517.88x = 428,283.71 × 95,980.71
  4. Step 4: Simplify right side
    285,517.88x = 41,106,974,087.33
  5. Step 5: Solve for x
    x = 41,106,974,087.33/285,517.88
  6. Step 6: Final answer
    x = 143,973.38

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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.