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Finding the Fourth Proportional to 664,712.70, 996,953.85 and 243,771.90

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Solution

The fourth proportional to 664,712.70, 996,953.85 and 243,771.90 is: 365,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,712.70 : 996,953.85 = 243,771.90 : x
  2. Step 2: Convert to fraction form
    664,712.70/996,953.85 = 243,771.90/x
  3. Step 3: Cross multiply
    664,712.70x = 996,953.85 × 243,771.90
  4. Step 4: Simplify right side
    664,712.70x = 243,029,334,226.82
  5. Step 5: Solve for x
    x = 243,029,334,226.82/664,712.70
  6. Step 6: Final answer
    x = 365,615.60

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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.