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Finding the Fourth Proportional to 404,603.10, 606,904.65 and 138,323.70

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Solution

The fourth proportional to 404,603.10, 606,904.65 and 138,323.70 is: 207,485.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,603.10 : 606,904.65 = 138,323.70 : x
  2. Step 2: Convert to fraction form
    404,603.10/606,904.65 = 138,323.70/x
  3. Step 3: Cross multiply
    404,603.10x = 606,904.65 × 138,323.70
  4. Step 4: Simplify right side
    404,603.10x = 83,949,296,735.21
  5. Step 5: Solve for x
    x = 83,949,296,735.21/404,603.10
  6. Step 6: Final answer
    x = 207,485.55

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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.