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Finding the Fourth Proportional to 404,399.52, 606,599.28 and 138,162.24

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Solution

The fourth proportional to 404,399.52, 606,599.28 and 138,162.24 is: 207,243.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,399.52 : 606,599.28 = 138,162.24 : x
  2. Step 2: Convert to fraction form
    404,399.52/606,599.28 = 138,162.24/x
  3. Step 3: Cross multiply
    404,399.52x = 606,599.28 × 138,162.24
  4. Step 4: Simplify right side
    404,399.52x = 83,809,115,307.19
  5. Step 5: Solve for x
    x = 83,809,115,307.19/404,399.52
  6. Step 6: Final answer
    x = 207,243.36

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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.