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Finding the Fourth Proportional to 401,080.94, 553,743.36 and 258,089.48

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Solution

The fourth proportional to 401,080.94, 553,743.36 and 258,089.48 is: 356,325.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,080.94 : 553,743.36 = 258,089.48 : x
  2. Step 2: Convert to fraction form
    401,080.94/553,743.36 = 258,089.48/x
  3. Step 3: Cross multiply
    401,080.94x = 553,743.36 × 258,089.48
  4. Step 4: Simplify right side
    401,080.94x = 142,915,333,067.14
  5. Step 5: Solve for x
    x = 142,915,333,067.14/401,080.94
  6. Step 6: Final answer
    x = 356,325.42

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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.