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Finding the Fourth Proportional to 664,398.64, 996,005.40 and 243,576.40

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Solution

The fourth proportional to 664,398.64, 996,005.40 and 243,576.40 is: 365,147.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,398.64 : 996,005.40 = 243,576.40 : x
  2. Step 2: Convert to fraction form
    664,398.64/996,005.40 = 243,576.40/x
  3. Step 3: Cross multiply
    664,398.64x = 996,005.40 × 243,576.40
  4. Step 4: Simplify right side
    664,398.64x = 242,603,409,712.56
  5. Step 5: Solve for x
    x = 242,603,409,712.56/664,398.64
  6. Step 6: Final answer
    x = 365,147.36

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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.