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Finding the Fourth Proportional to 403,415.52, 556,727.22 and 222,139.95

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Solution

The fourth proportional to 403,415.52, 556,727.22 and 222,139.95 is: 306,560.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,415.52 : 556,727.22 = 222,139.95 : x
  2. Step 2: Convert to fraction form
    403,415.52/556,727.22 = 222,139.95/x
  3. Step 3: Cross multiply
    403,415.52x = 556,727.22 × 222,139.95
  4. Step 4: Simplify right side
    403,415.52x = 123,671,356,814.44
  5. Step 5: Solve for x
    x = 123,671,356,814.44/403,415.52
  6. Step 6: Final answer
    x = 306,560.73

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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.