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Finding the Fourth Proportional to 664,249.40, 996,471.30 and 348,730.10

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Solution

The fourth proportional to 664,249.40, 996,471.30 and 348,730.10 is: 523,146.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,249.40 : 996,471.30 = 348,730.10 : x
  2. Step 2: Convert to fraction form
    664,249.40/996,471.30 = 348,730.10/x
  3. Step 3: Cross multiply
    664,249.40x = 996,471.30 × 348,730.10
  4. Step 4: Simplify right side
    664,249.40x = 347,499,536,096.13
  5. Step 5: Solve for x
    x = 347,499,536,096.13/664,249.40
  6. Step 6: Final answer
    x = 523,146.18

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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.