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Finding the Fourth Proportional to 404,716.40, 606,873.68 and 138,401.36

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Solution

The fourth proportional to 404,716.40, 606,873.68 and 138,401.36 is: 207,533.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,716.40 : 606,873.68 = 138,401.36 : x
  2. Step 2: Convert to fraction form
    404,716.40/606,873.68 = 138,401.36/x
  3. Step 3: Cross multiply
    404,716.40x = 606,873.68 × 138,401.36
  4. Step 4: Simplify right side
    404,716.40x = 83,992,142,660.20
  5. Step 5: Solve for x
    x = 83,992,142,660.20/404,716.40
  6. Step 6: Final answer
    x = 207,533.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.