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Finding the Fourth Proportional to 323,064.47, 484,596.58 and 86,401

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Solution

The fourth proportional to 323,064.47, 484,596.58 and 86,401 is: 129,601.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,064.47 : 484,596.58 = 86,401 : x
  2. Step 2: Convert to fraction form
    323,064.47/484,596.58 = 86,401/x
  3. Step 3: Cross multiply
    323,064.47x = 484,596.58 × 86,401
  4. Step 4: Simplify right side
    323,064.47x = 41,869,629,108.58
  5. Step 5: Solve for x
    x = 41,869,629,108.58/323,064.47
  6. Step 6: Final answer
    x = 129,601.47

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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.