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Finding the Fourth Proportional to 331,380.60, 497,070.90 and 305,719.80

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Solution

The fourth proportional to 331,380.60, 497,070.90 and 305,719.80 is: 458,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,380.60 : 497,070.90 = 305,719.80 : x
  2. Step 2: Convert to fraction form
    331,380.60/497,070.90 = 305,719.80/x
  3. Step 3: Cross multiply
    331,380.60x = 497,070.90 × 305,719.80
  4. Step 4: Simplify right side
    331,380.60x = 151,964,416,133.82
  5. Step 5: Solve for x
    x = 151,964,416,133.82/331,380.60
  6. Step 6: Final answer
    x = 458,579.70

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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.