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Finding the Fourth Proportional to 484,347.90, 726,549.18 and 147,399.54

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Solution

The fourth proportional to 484,347.90, 726,549.18 and 147,399.54 is: 221,107.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,347.90 : 726,549.18 = 147,399.54 : x
  2. Step 2: Convert to fraction form
    484,347.90/726,549.18 = 147,399.54/x
  3. Step 3: Cross multiply
    484,347.90x = 726,549.18 × 147,399.54
  4. Step 4: Simplify right side
    484,347.90x = 107,093,014,919.38
  5. Step 5: Solve for x
    x = 107,093,014,919.38/484,347.90
  6. Step 6: Final answer
    x = 221,107.63

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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.