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Finding the Fourth Proportional to 664,368.20, 996,260.70 and 264,876.20

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Solution

The fourth proportional to 664,368.20, 996,260.70 and 264,876.20 is: 397,198.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,368.20 : 996,260.70 = 264,876.20 : x
  2. Step 2: Convert to fraction form
    664,368.20/996,260.70 = 264,876.20/x
  3. Step 3: Cross multiply
    664,368.20x = 996,260.70 × 264,876.20
  4. Step 4: Simplify right side
    664,368.20x = 263,885,748,425.34
  5. Step 5: Solve for x
    x = 263,885,748,425.34/664,368.20
  6. Step 6: Final answer
    x = 397,198.04

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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.