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Finding the Fourth Proportional to 323,538.80, 485,309.39 and 98,898.36

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Solution

The fourth proportional to 323,538.80, 485,309.39 and 98,898.36 is: 148,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,538.80 : 485,309.39 = 98,898.36 : x
  2. Step 2: Convert to fraction form
    323,538.80/485,309.39 = 98,898.36/x
  3. Step 3: Cross multiply
    323,538.80x = 485,309.39 × 98,898.36
  4. Step 4: Simplify right side
    323,538.80x = 47,996,301,005.50
  5. Step 5: Solve for x
    x = 47,996,301,005.50/323,538.80
  6. Step 6: Final answer
    x = 148,347.90

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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.