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Finding the Fourth Proportional to 317,881.25, 476,846.29 and 90,172.97

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Solution

The fourth proportional to 317,881.25, 476,846.29 and 90,172.97 is: 135,266.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,881.25 : 476,846.29 = 90,172.97 : x
  2. Step 2: Convert to fraction form
    317,881.25/476,846.29 = 90,172.97/x
  3. Step 3: Cross multiply
    317,881.25x = 476,846.29 × 90,172.97
  4. Step 4: Simplify right side
    317,881.25x = 42,998,645,719.44
  5. Step 5: Solve for x
    x = 42,998,645,719.44/317,881.25
  6. Step 6: Final answer
    x = 135,266.38

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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.