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Finding the Fourth Proportional to 323,079.22, 484,618.90 and 145,378.63

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Solution

The fourth proportional to 323,079.22, 484,618.90 and 145,378.63 is: 218,067.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,079.22 : 484,618.90 = 145,378.63 : x
  2. Step 2: Convert to fraction form
    323,079.22/484,618.90 = 145,378.63/x
  3. Step 3: Cross multiply
    323,079.22x = 484,618.90 × 145,378.63
  4. Step 4: Simplify right side
    323,079.22x = 70,453,232,269.02
  5. Step 5: Solve for x
    x = 70,453,232,269.02/323,079.22
  6. Step 6: Final answer
    x = 218,067.98

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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.