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Finding the Fourth Proportional to 273,919, 378,025.80 and 153,060.64

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Solution

The fourth proportional to 273,919, 378,025.80 and 153,060.64 is: 211,233.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,919 : 378,025.80 = 153,060.64 : x
  2. Step 2: Convert to fraction form
    273,919/378,025.80 = 153,060.64/x
  3. Step 3: Cross multiply
    273,919x = 378,025.80 × 153,060.64
  4. Step 4: Simplify right side
    273,919x = 57,860,870,884.51
  5. Step 5: Solve for x
    x = 57,860,870,884.51/273,919
  6. Step 6: Final answer
    x = 211,233.51

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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.