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Finding the Fourth Proportional to 665,712.54, 998,470.40 and 244,890

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Solution

The fourth proportional to 665,712.54, 998,470.40 and 244,890 is: 367,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,712.54 : 998,470.40 = 244,890 : x
  2. Step 2: Convert to fraction form
    665,712.54/998,470.40 = 244,890/x
  3. Step 3: Cross multiply
    665,712.54x = 998,470.40 × 244,890
  4. Step 4: Simplify right side
    665,712.54x = 244,515,415,031.55
  5. Step 5: Solve for x
    x = 244,515,415,031.55/665,712.54
  6. Step 6: Final answer
    x = 367,298.80

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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.