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Finding the Fourth Proportional to 323,395.20, 485,165.52 and 98,736.84

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Solution

The fourth proportional to 323,395.20, 485,165.52 and 98,736.84 is: 148,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,395.20 : 485,165.52 = 98,736.84 : x
  2. Step 2: Convert to fraction form
    323,395.20/485,165.52 = 98,736.84/x
  3. Step 3: Cross multiply
    323,395.20x = 485,165.52 × 98,736.84
  4. Step 4: Simplify right side
    323,395.20x = 47,903,710,321.76
  5. Step 5: Solve for x
    x = 47,903,710,321.76/323,395.20
  6. Step 6: Final answer
    x = 148,127.46

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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.