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Finding the Fourth Proportional to 274,137.68, 378,292.47 and 153,288.92

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Solution

The fourth proportional to 274,137.68, 378,292.47 and 153,288.92 is: 211,528.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,137.68 : 378,292.47 = 153,288.92 : x
  2. Step 2: Convert to fraction form
    274,137.68/378,292.47 = 153,288.92/x
  3. Step 3: Cross multiply
    274,137.68x = 378,292.47 × 153,288.92
  4. Step 4: Simplify right side
    274,137.68x = 57,988,044,170.43
  5. Step 5: Solve for x
    x = 57,988,044,170.43/274,137.68
  6. Step 6: Final answer
    x = 211,528.91

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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.