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Finding the Fourth Proportional to 273,987.75, 378,077.79 and 153,112.26

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Solution

The fourth proportional to 273,987.75, 378,077.79 and 153,112.26 is: 211,280.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,987.75 : 378,077.79 = 153,112.26 : x
  2. Step 2: Convert to fraction form
    273,987.75/378,077.79 = 153,112.26/x
  3. Step 3: Cross multiply
    273,987.75x = 378,077.79 × 153,112.26
  4. Step 4: Simplify right side
    273,987.75x = 57,888,344,882.71
  5. Step 5: Solve for x
    x = 57,888,344,882.71/273,987.75
  6. Step 6: Final answer
    x = 211,280.78

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1.5x scale

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.