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Finding the Fourth Proportional to 345,449.15, 476,720.80 and 200,283.15

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Solution

The fourth proportional to 345,449.15, 476,720.80 and 200,283.15 is: 276,391.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,449.15 : 476,720.80 = 200,283.15 : x
  2. Step 2: Convert to fraction form
    345,449.15/476,720.80 = 200,283.15/x
  3. Step 3: Cross multiply
    345,449.15x = 476,720.80 × 200,283.15
  4. Step 4: Simplify right side
    345,449.15x = 95,479,143,494.52
  5. Step 5: Solve for x
    x = 95,479,143,494.52/345,449.15
  6. Step 6: Final answer
    x = 276,391.31

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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.