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Finding the Fourth Proportional to 400,963.59, 553,193.52 and 228,757.85

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Solution

The fourth proportional to 400,963.59, 553,193.52 and 228,757.85 is: 315,608.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,963.59 : 553,193.52 = 228,757.85 : x
  2. Step 2: Convert to fraction form
    400,963.59/553,193.52 = 228,757.85/x
  3. Step 3: Cross multiply
    400,963.59x = 553,193.52 × 228,757.85
  4. Step 4: Simplify right side
    400,963.59x = 126,547,360,435.48
  5. Step 5: Solve for x
    x = 126,547,360,435.48/400,963.59
  6. Step 6: Final answer
    x = 315,608.11

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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.