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Finding the Fourth Proportional to 401,053.80, 553,401.56 and 239,850.02

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Solution

The fourth proportional to 401,053.80, 553,401.56 and 239,850.02 is: 330,961.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,053.80 : 553,401.56 = 239,850.02 : x
  2. Step 2: Convert to fraction form
    401,053.80/553,401.56 = 239,850.02/x
  3. Step 3: Cross multiply
    401,053.80x = 553,401.56 × 239,850.02
  4. Step 4: Simplify right side
    401,053.80x = 132,733,375,234.03
  5. Step 5: Solve for x
    x = 132,733,375,234.03/401,053.80
  6. Step 6: Final answer
    x = 330,961.52

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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.