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Finding the Fourth Proportional to 403,684.88, 557,128.92 and 222,415.40

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Solution

The fourth proportional to 403,684.88, 557,128.92 and 222,415.40 is: 306,957.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,684.88 : 557,128.92 = 222,415.40 : x
  2. Step 2: Convert to fraction form
    403,684.88/557,128.92 = 222,415.40/x
  3. Step 3: Cross multiply
    403,684.88x = 557,128.92 × 222,415.40
  4. Step 4: Simplify right side
    403,684.88x = 123,914,051,593.37
  5. Step 5: Solve for x
    x = 123,914,051,593.37/403,684.88
  6. Step 6: Final answer
    x = 306,957.38

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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.