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Finding the Fourth Proportional to 403,425.72, 556,722.90 and 222,133.86

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Solution

The fourth proportional to 403,425.72, 556,722.90 and 222,133.86 is: 306,542.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,425.72 : 556,722.90 = 222,133.86 : x
  2. Step 2: Convert to fraction form
    403,425.72/556,722.90 = 222,133.86/x
  3. Step 3: Cross multiply
    403,425.72x = 556,722.90 × 222,133.86
  4. Step 4: Simplify right side
    403,425.72x = 123,667,006,727.39
  5. Step 5: Solve for x
    x = 123,667,006,727.39/403,425.72
  6. Step 6: Final answer
    x = 306,542.20

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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.