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Finding the Fourth Proportional to 317,899.80, 476,849.70 and 266,578.20

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Solution

The fourth proportional to 317,899.80, 476,849.70 and 266,578.20 is: 399,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,899.80 : 476,849.70 = 266,578.20 : x
  2. Step 2: Convert to fraction form
    317,899.80/476,849.70 = 266,578.20/x
  3. Step 3: Cross multiply
    317,899.80x = 476,849.70 × 266,578.20
  4. Step 4: Simplify right side
    317,899.80x = 127,117,734,696.54
  5. Step 5: Solve for x
    x = 127,117,734,696.54/317,899.80
  6. Step 6: Final answer
    x = 399,867.30

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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.