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Finding the Fourth Proportional to 403,878.21, 557,329.23 and 222,589.59

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Solution

The fourth proportional to 403,878.21, 557,329.23 and 222,589.59 is: 307,161.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,878.21 : 557,329.23 = 222,589.59 : x
  2. Step 2: Convert to fraction form
    403,878.21/557,329.23 = 222,589.59/x
  3. Step 3: Cross multiply
    403,878.21x = 557,329.23 × 222,589.59
  4. Step 4: Simplify right side
    403,878.21x = 124,055,684,800.72
  5. Step 5: Solve for x
    x = 124,055,684,800.72/403,878.21
  6. Step 6: Final answer
    x = 307,161.12

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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.