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Finding the Fourth Proportional to 418,012.32, 576,523.44 and 274,919.28

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Solution

The fourth proportional to 418,012.32, 576,523.44 and 274,919.28 is: 379,169.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,012.32 : 576,523.44 = 274,919.28 : x
  2. Step 2: Convert to fraction form
    418,012.32/576,523.44 = 274,919.28/x
  3. Step 3: Cross multiply
    418,012.32x = 576,523.44 × 274,919.28
  4. Step 4: Simplify right side
    418,012.32x = 158,497,409,027.92
  5. Step 5: Solve for x
    x = 158,497,409,027.92/418,012.32
  6. Step 6: Final answer
    x = 379,169.23

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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.