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Finding the Fourth Proportional to 400,957.44, 553,320.94 and 219,680.64

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Solution

The fourth proportional to 400,957.44, 553,320.94 and 219,680.64 is: 303,159.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,957.44 : 553,320.94 = 219,680.64 : x
  2. Step 2: Convert to fraction form
    400,957.44/553,320.94 = 219,680.64/x
  3. Step 3: Cross multiply
    400,957.44x = 553,320.94 × 219,680.64
  4. Step 4: Simplify right side
    400,957.44x = 121,553,898,224.60
  5. Step 5: Solve for x
    x = 121,553,898,224.60/400,957.44
  6. Step 6: Final answer
    x = 303,159.10

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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.