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Finding the Fourth Proportional to 400,963.52, 553,329.62 and 222,115.52

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Solution

The fourth proportional to 400,963.52, 553,329.62 and 222,115.52 is: 306,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,963.52 : 553,329.62 = 222,115.52 : x
  2. Step 2: Convert to fraction form
    400,963.52/553,329.62 = 222,115.52/x
  3. Step 3: Cross multiply
    400,963.52x = 553,329.62 × 222,115.52
  4. Step 4: Simplify right side
    400,963.52x = 122,903,096,277.70
  5. Step 5: Solve for x
    x = 122,903,096,277.70/400,963.52
  6. Step 6: Final answer
    x = 306,519.40

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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.