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Finding the Fourth Proportional to 365,360.48, 548,351.76 and 143,900

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Solution

The fourth proportional to 365,360.48, 548,351.76 and 143,900 is: 215,972.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,360.48 : 548,351.76 = 143,900 : x
  2. Step 2: Convert to fraction form
    365,360.48/548,351.76 = 143,900/x
  3. Step 3: Cross multiply
    365,360.48x = 548,351.76 × 143,900
  4. Step 4: Simplify right side
    365,360.48x = 78,907,818,264
  5. Step 5: Solve for x
    x = 78,907,818,264/365,360.48
  6. Step 6: Final answer
    x = 215,972.51

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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.