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Finding the Fourth Proportional to 400,862.01, 553,035.66 and 228,789.54

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Solution

The fourth proportional to 400,862.01, 553,035.66 and 228,789.54 is: 315,641.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,862.01 : 553,035.66 = 228,789.54 : x
  2. Step 2: Convert to fraction form
    400,862.01/553,035.66 = 228,789.54/x
  3. Step 3: Cross multiply
    400,862.01x = 553,035.66 × 228,789.54
  4. Step 4: Simplify right side
    400,862.01x = 126,528,772,485.09
  5. Step 5: Solve for x
    x = 126,528,772,485.09/400,862.01
  6. Step 6: Final answer
    x = 315,641.71

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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.