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Finding the Fourth Proportional to 400,886.91, 553,232.88 and 228,801.42

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Solution

The fourth proportional to 400,886.91, 553,232.88 and 228,801.42 is: 315,751.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,886.91 : 553,232.88 = 228,801.42 : x
  2. Step 2: Convert to fraction form
    400,886.91/553,232.88 = 228,801.42/x
  3. Step 3: Cross multiply
    400,886.91x = 553,232.88 × 228,801.42
  4. Step 4: Simplify right side
    400,886.91x = 126,580,468,534.69
  5. Step 5: Solve for x
    x = 126,580,468,534.69/400,886.91
  6. Step 6: Final answer
    x = 315,751.06

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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.