Home / 290,037.32-400,255.44-217,311.20

Finding the Fourth Proportional to 290,037.32, 400,255.44 and 217,311.20

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Solution

The fourth proportional to 290,037.32, 400,255.44 and 217,311.20 is: 299,892.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,037.32 : 400,255.44 = 217,311.20 : x
  2. Step 2: Convert to fraction form
    290,037.32/400,255.44 = 217,311.20/x
  3. Step 3: Cross multiply
    290,037.32x = 400,255.44 × 217,311.20
  4. Step 4: Simplify right side
    290,037.32x = 86,979,989,972.93
  5. Step 5: Solve for x
    x = 86,979,989,972.93/290,037.32
  6. Step 6: Final answer
    x = 299,892.41

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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.