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Finding the Fourth Proportional to 400,917.93, 553,266.86 and 219,636.38

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Solution

The fourth proportional to 400,917.93, 553,266.86 and 219,636.38 is: 303,098.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,917.93 : 553,266.86 = 219,636.38 : x
  2. Step 2: Convert to fraction form
    400,917.93/553,266.86 = 219,636.38/x
  3. Step 3: Cross multiply
    400,917.93x = 553,266.86 × 219,636.38
  4. Step 4: Simplify right side
    400,917.93x = 121,517,526,439.85
  5. Step 5: Solve for x
    x = 121,517,526,439.85/400,917.93
  6. Step 6: Final answer
    x = 303,098.26

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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.