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Finding the Fourth Proportional to 320,433.60, 480,650.40 and 83,800.20

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Solution

The fourth proportional to 320,433.60, 480,650.40 and 83,800.20 is: 125,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,433.60 : 480,650.40 = 83,800.20 : x
  2. Step 2: Convert to fraction form
    320,433.60/480,650.40 = 83,800.20/x
  3. Step 3: Cross multiply
    320,433.60x = 480,650.40 × 83,800.20
  4. Step 4: Simplify right side
    320,433.60x = 40,278,599,650.08
  5. Step 5: Solve for x
    x = 40,278,599,650.08/320,433.60
  6. Step 6: Final answer
    x = 125,700.30

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1.5x scale

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.