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Finding the Fourth Proportional to 323,486.60, 485,114.70 and 146,078.60

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Solution

The fourth proportional to 323,486.60, 485,114.70 and 146,078.60 is: 219,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,486.60 : 485,114.70 = 146,078.60 : x
  2. Step 2: Convert to fraction form
    323,486.60/485,114.70 = 146,078.60/x
  3. Step 3: Cross multiply
    323,486.60x = 485,114.70 × 146,078.60
  4. Step 4: Simplify right side
    323,486.60x = 70,864,876,215.42
  5. Step 5: Solve for x
    x = 70,864,876,215.42/323,486.60
  6. Step 6: Final answer
    x = 219,065.88

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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.