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Finding the Fourth Proportional to 320,366.70, 480,513.60 and 83,733.30

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Solution

The fourth proportional to 320,366.70, 480,513.60 and 83,733.30 is: 125,590.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,366.70 : 480,513.60 = 83,733.30 : x
  2. Step 2: Convert to fraction form
    320,366.70/480,513.60 = 83,733.30/x
  3. Step 3: Cross multiply
    320,366.70x = 480,513.60 × 83,733.30
  4. Step 4: Simplify right side
    320,366.70x = 40,234,989,422.88
  5. Step 5: Solve for x
    x = 40,234,989,422.88/320,366.70
  6. Step 6: Final answer
    x = 125,590.42

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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.