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Finding the Fourth Proportional to 664,808.40, 996,950.14 and 243,854.64

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Solution

The fourth proportional to 664,808.40, 996,950.14 and 243,854.64 is: 365,685.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,808.40 : 996,950.14 = 243,854.64 : x
  2. Step 2: Convert to fraction form
    664,808.40/996,950.14 = 243,854.64/x
  3. Step 3: Cross multiply
    664,808.40x = 996,950.14 × 243,854.64
  4. Step 4: Simplify right side
    664,808.40x = 243,110,917,487.65
  5. Step 5: Solve for x
    x = 243,110,917,487.65/664,808.40
  6. Step 6: Final answer
    x = 365,685.69

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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.