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Finding the Fourth Proportional to 269,660, 372,130.80 and 150,428

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Solution

The fourth proportional to 269,660, 372,130.80 and 150,428 is: 207,590.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,660 : 372,130.80 = 150,428 : x
  2. Step 2: Convert to fraction form
    269,660/372,130.80 = 150,428/x
  3. Step 3: Cross multiply
    269,660x = 372,130.80 × 150,428
  4. Step 4: Simplify right side
    269,660x = 55,978,891,982.40
  5. Step 5: Solve for x
    x = 55,978,891,982.40/269,660
  6. Step 6: Final answer
    x = 207,590.64

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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.