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Finding the Fourth Proportional to 323,622.84, 485,433.84 and 86,965.52

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Solution

The fourth proportional to 323,622.84, 485,433.84 and 86,965.52 is: 130,448.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,622.84 : 485,433.84 = 86,965.52 : x
  2. Step 2: Convert to fraction form
    323,622.84/485,433.84 = 86,965.52/x
  3. Step 3: Cross multiply
    323,622.84x = 485,433.84 × 86,965.52
  4. Step 4: Simplify right side
    323,622.84x = 42,216,006,321.20
  5. Step 5: Solve for x
    x = 42,216,006,321.20/323,622.84
  6. Step 6: Final answer
    x = 130,448.17

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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.