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Finding the Fourth Proportional to 404,745.36, 607,126.28 and 138,811.56

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Solution

The fourth proportional to 404,745.36, 607,126.28 and 138,811.56 is: 208,220.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,745.36 : 607,126.28 = 138,811.56 : x
  2. Step 2: Convert to fraction form
    404,745.36/607,126.28 = 138,811.56/x
  3. Step 3: Cross multiply
    404,745.36x = 607,126.28 × 138,811.56
  4. Step 4: Simplify right side
    404,745.36x = 84,276,146,043.80
  5. Step 5: Solve for x
    x = 84,276,146,043.80/404,745.36
  6. Step 6: Final answer
    x = 208,220.17

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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.