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Finding the Fourth Proportional to 270,135.69, 372,809.70 and 149,300.57

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Solution

The fourth proportional to 270,135.69, 372,809.70 and 149,300.57 is: 206,047.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,135.69 : 372,809.70 = 149,300.57 : x
  2. Step 2: Convert to fraction form
    270,135.69/372,809.70 = 149,300.57/x
  3. Step 3: Cross multiply
    270,135.69x = 372,809.70 × 149,300.57
  4. Step 4: Simplify right side
    270,135.69x = 55,660,700,711.53
  5. Step 5: Solve for x
    x = 55,660,700,711.53/270,135.69
  6. Step 6: Final answer
    x = 206,047.19

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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.