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Finding the Fourth Proportional to 401,813.66, 554,509.73 and 220,542.50

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Solution

The fourth proportional to 401,813.66, 554,509.73 and 220,542.50 is: 304,352.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,813.66 : 554,509.73 = 220,542.50 : x
  2. Step 2: Convert to fraction form
    401,813.66/554,509.73 = 220,542.50/x
  3. Step 3: Cross multiply
    401,813.66x = 554,509.73 × 220,542.50
  4. Step 4: Simplify right side
    401,813.66x = 122,292,964,066.16
  5. Step 5: Solve for x
    x = 122,292,964,066.16/401,813.66
  6. Step 6: Final answer
    x = 304,352.43

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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.