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Finding the Fourth Proportional to 323,604.20, 485,428.77 and 98,947.35

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Solution

The fourth proportional to 323,604.20, 485,428.77 and 98,947.35 is: 148,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,604.20 : 485,428.77 = 98,947.35 : x
  2. Step 2: Convert to fraction form
    323,604.20/485,428.77 = 98,947.35/x
  3. Step 3: Cross multiply
    323,604.20x = 485,428.77 × 98,947.35
  4. Step 4: Simplify right side
    323,604.20x = 48,031,890,405.26
  5. Step 5: Solve for x
    x = 48,031,890,405.26/323,604.20
  6. Step 6: Final answer
    x = 148,427.90

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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.