Home / 921,896.32-1,382,844.16-221,480.32

Finding the Fourth Proportional to 921,896.32, 1,382,844.16 and 221,480.32

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Solution

The fourth proportional to 921,896.32, 1,382,844.16 and 221,480.32 is: 332,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,896.32 : 1,382,844.16 = 221,480.32 : x
  2. Step 2: Convert to fraction form
    921,896.32/1,382,844.16 = 221,480.32/x
  3. Step 3: Cross multiply
    921,896.32x = 1,382,844.16 × 221,480.32
  4. Step 4: Simplify right side
    921,896.32x = 306,272,767,066.93
  5. Step 5: Solve for x
    x = 306,272,767,066.93/921,896.32
  6. Step 6: Final answer
    x = 332,220.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.