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Finding the Fourth Proportional to 401,778.93, 554,467.07 and 220,502.76

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Solution

The fourth proportional to 401,778.93, 554,467.07 and 220,502.76 is: 304,300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,778.93 : 554,467.07 = 220,502.76 : x
  2. Step 2: Convert to fraction form
    401,778.93/554,467.07 = 220,502.76/x
  3. Step 3: Cross multiply
    401,778.93x = 554,467.07 × 220,502.76
  4. Step 4: Simplify right side
    401,778.93x = 122,261,517,736.12
  5. Step 5: Solve for x
    x = 122,261,517,736.12/401,778.93
  6. Step 6: Final answer
    x = 304,300.47

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Double scale
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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.