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Finding the Fourth Proportional to 298,893.29, 447,840.66 and 209,987.63

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Solution

The fourth proportional to 298,893.29, 447,840.66 and 209,987.63 is: 314,630.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,893.29 : 447,840.66 = 209,987.63 : x
  2. Step 2: Convert to fraction form
    298,893.29/447,840.66 = 209,987.63/x
  3. Step 3: Cross multiply
    298,893.29x = 447,840.66 × 209,987.63
  4. Step 4: Simplify right side
    298,893.29x = 94,040,996,571.83
  5. Step 5: Solve for x
    x = 94,040,996,571.83/298,893.29
  6. Step 6: Final answer
    x = 314,630.68

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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.