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Finding the Fourth Proportional to 401,863.58, 554,569.79 and 220,578.59

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Solution

The fourth proportional to 401,863.58, 554,569.79 and 220,578.59 is: 304,397.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,863.58 : 554,569.79 = 220,578.59 : x
  2. Step 2: Convert to fraction form
    401,863.58/554,569.79 = 220,578.59/x
  3. Step 3: Cross multiply
    401,863.58x = 554,569.79 × 220,578.59
  4. Step 4: Simplify right side
    401,863.58x = 122,326,222,334.80
  5. Step 5: Solve for x
    x = 122,326,222,334.80/401,863.58
  6. Step 6: Final answer
    x = 304,397.38

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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.