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Finding the Fourth Proportional to 323,871.06, 485,799.30 and 146,330.40

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Solution

The fourth proportional to 323,871.06, 485,799.30 and 146,330.40 is: 219,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,871.06 : 485,799.30 = 146,330.40 : x
  2. Step 2: Convert to fraction form
    323,871.06/485,799.30 = 146,330.40/x
  3. Step 3: Cross multiply
    323,871.06x = 485,799.30 × 146,330.40
  4. Step 4: Simplify right side
    323,871.06x = 71,087,205,888.72
  5. Step 5: Solve for x
    x = 71,087,205,888.72/323,871.06
  6. Step 6: Final answer
    x = 219,492.31

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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.