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Finding the Fourth Proportional to 484,583.78, 726,979.19 and 147,651.31

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Solution

The fourth proportional to 484,583.78, 726,979.19 and 147,651.31 is: 221,508.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,583.78 : 726,979.19 = 147,651.31 : x
  2. Step 2: Convert to fraction form
    484,583.78/726,979.19 = 147,651.31/x
  3. Step 3: Cross multiply
    484,583.78x = 726,979.19 × 147,651.31
  4. Step 4: Simplify right side
    484,583.78x = 107,339,425,827.45
  5. Step 5: Solve for x
    x = 107,339,425,827.45/484,583.78
  6. Step 6: Final answer
    x = 221,508.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.