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Finding the Fourth Proportional to 323,615.15, 485,344.87 and 98,977.53

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Solution

The fourth proportional to 323,615.15, 485,344.87 and 98,977.53 is: 148,442.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,615.15 : 485,344.87 = 98,977.53 : x
  2. Step 2: Convert to fraction form
    323,615.15/485,344.87 = 98,977.53/x
  3. Step 3: Cross multiply
    323,615.15x = 485,344.87 × 98,977.53
  4. Step 4: Simplify right side
    323,615.15x = 48,038,235,551.68
  5. Step 5: Solve for x
    x = 48,038,235,551.68/323,615.15
  6. Step 6: Final answer
    x = 148,442.48

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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.