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Finding the Fourth Proportional to 273,970.72, 378,078.36 and 153,111.92

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Solution

The fourth proportional to 273,970.72, 378,078.36 and 153,111.92 is: 211,293.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,970.72 : 378,078.36 = 153,111.92 : x
  2. Step 2: Convert to fraction form
    273,970.72/378,078.36 = 153,111.92/x
  3. Step 3: Cross multiply
    273,970.72x = 378,078.36 × 153,111.92
  4. Step 4: Simplify right side
    273,970.72x = 57,888,303,610.05
  5. Step 5: Solve for x
    x = 57,888,303,610.05/273,970.72
  6. Step 6: Final answer
    x = 211,293.76

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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.