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Finding the Fourth Proportional to 324,868.90, 487,266.10 and 85,005.98

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Solution

The fourth proportional to 324,868.90, 487,266.10 and 85,005.98 is: 127,499.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,868.90 : 487,266.10 = 85,005.98 : x
  2. Step 2: Convert to fraction form
    324,868.90/487,266.10 = 85,005.98/x
  3. Step 3: Cross multiply
    324,868.90x = 487,266.10 × 85,005.98
  4. Step 4: Simplify right side
    324,868.90x = 41,420,532,351.28
  5. Step 5: Solve for x
    x = 41,420,532,351.28/324,868.90
  6. Step 6: Final answer
    x = 127,499.22

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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.