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Finding the Fourth Proportional to 320,847.60, 480,234.60 and 250,345.20

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Solution

The fourth proportional to 320,847.60, 480,234.60 and 250,345.20 is: 374,708.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,847.60 : 480,234.60 = 250,345.20 : x
  2. Step 2: Convert to fraction form
    320,847.60/480,234.60 = 250,345.20/x
  3. Step 3: Cross multiply
    320,847.60x = 480,234.60 × 250,345.20
  4. Step 4: Simplify right side
    320,847.60x = 120,224,426,983.92
  5. Step 5: Solve for x
    x = 120,224,426,983.92/320,847.60
  6. Step 6: Final answer
    x = 374,708.82

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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.