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Finding the Fourth Proportional to 403,479.72, 556,781.94 and 222,207.39

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Solution

The fourth proportional to 403,479.72, 556,781.94 and 222,207.39 is: 306,635.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,479.72 : 556,781.94 = 222,207.39 : x
  2. Step 2: Convert to fraction form
    403,479.72/556,781.94 = 222,207.39/x
  3. Step 3: Cross multiply
    403,479.72x = 556,781.94 × 222,207.39
  4. Step 4: Simplify right side
    403,479.72x = 123,721,061,686.54
  5. Step 5: Solve for x
    x = 123,721,061,686.54/403,479.72
  6. Step 6: Final answer
    x = 306,635.14

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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.