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Finding the Fourth Proportional to 400,957.75, 553,321.70 and 222,109.75

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Solution

The fourth proportional to 400,957.75, 553,321.70 and 222,109.75 is: 306,511.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,957.75 : 553,321.70 = 222,109.75 : x
  2. Step 2: Convert to fraction form
    400,957.75/553,321.70 = 222,109.75/x
  3. Step 3: Cross multiply
    400,957.75x = 553,321.70 × 222,109.75
  4. Step 4: Simplify right side
    400,957.75x = 122,898,144,456.58
  5. Step 5: Solve for x
    x = 122,898,144,456.58/400,957.75
  6. Step 6: Final answer
    x = 306,511.46

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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.