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Finding the Fourth Proportional to 323,867.30, 485,655.15 and 146,282.90

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Solution

The fourth proportional to 323,867.30, 485,655.15 and 146,282.90 is: 219,358.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,867.30 : 485,655.15 = 146,282.90 : x
  2. Step 2: Convert to fraction form
    323,867.30/485,655.15 = 146,282.90/x
  3. Step 3: Cross multiply
    323,867.30x = 485,655.15 × 146,282.90
  4. Step 4: Simplify right side
    323,867.30x = 71,043,043,741.94
  5. Step 5: Solve for x
    x = 71,043,043,741.94/323,867.30
  6. Step 6: Final answer
    x = 219,358.50

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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.