Home / 323,921.57-485,975.73-99,315.15

Finding the Fourth Proportional to 323,921.57, 485,975.73 and 99,315.15

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Solution

The fourth proportional to 323,921.57, 485,975.73 and 99,315.15 is: 149,001.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,921.57 : 485,975.73 = 99,315.15 : x
  2. Step 2: Convert to fraction form
    323,921.57/485,975.73 = 99,315.15/x
  3. Step 3: Cross multiply
    323,921.57x = 485,975.73 × 99,315.15
  4. Step 4: Simplify right side
    323,921.57x = 48,264,753,804.95
  5. Step 5: Solve for x
    x = 48,264,753,804.95/323,921.57
  6. Step 6: Final answer
    x = 149,001.36

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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.