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Finding the Fourth Proportional to 401,891.04, 554,357.36 and 238,431.83

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Solution

The fourth proportional to 401,891.04, 554,357.36 and 238,431.83 is: 328,886.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,891.04 : 554,357.36 = 238,431.83 : x
  2. Step 2: Convert to fraction form
    401,891.04/554,357.36 = 238,431.83/x
  3. Step 3: Cross multiply
    401,891.04x = 554,357.36 × 238,431.83
  4. Step 4: Simplify right side
    401,891.04x = 132,176,435,854.82
  5. Step 5: Solve for x
    x = 132,176,435,854.82/401,891.04
  6. Step 6: Final answer
    x = 328,886.25

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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.