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Finding the Fourth Proportional to 401,563.80, 554,175.42 and 240,387.68

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Solution

The fourth proportional to 401,563.80, 554,175.42 and 240,387.68 is: 331,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,563.80 : 554,175.42 = 240,387.68 : x
  2. Step 2: Convert to fraction form
    401,563.80/554,175.42 = 240,387.68/x
  3. Step 3: Cross multiply
    401,563.80x = 554,175.42 × 240,387.68
  4. Step 4: Simplify right side
    401,563.80x = 133,216,943,526.83
  5. Step 5: Solve for x
    x = 133,216,943,526.83/401,563.80
  6. Step 6: Final answer
    x = 331,745.40

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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.