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Finding the Fourth Proportional to 318,694.71, 439,699.41 and 180,850.80

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Solution

The fourth proportional to 318,694.71, 439,699.41 and 180,850.80 is: 249,517.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,694.71 : 439,699.41 = 180,850.80 : x
  2. Step 2: Convert to fraction form
    318,694.71/439,699.41 = 180,850.80/x
  3. Step 3: Cross multiply
    318,694.71x = 439,699.41 × 180,850.80
  4. Step 4: Simplify right side
    318,694.71x = 79,519,990,058.03
  5. Step 5: Solve for x
    x = 79,519,990,058.03/318,694.71
  6. Step 6: Final answer
    x = 249,517.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.