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Finding the Fourth Proportional to 298,118.72, 447,167.44 and 84,887.66

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Solution

The fourth proportional to 298,118.72, 447,167.44 and 84,887.66 is: 127,328.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,118.72 : 447,167.44 = 84,887.66 : x
  2. Step 2: Convert to fraction form
    298,118.72/447,167.44 = 84,887.66/x
  3. Step 3: Cross multiply
    298,118.72x = 447,167.44 × 84,887.66
  4. Step 4: Simplify right side
    298,118.72x = 37,958,997,609.79
  5. Step 5: Solve for x
    x = 37,958,997,609.79/298,118.72
  6. Step 6: Final answer
    x = 127,328.46

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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.