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Finding the Fourth Proportional to 323,368.80, 485,053.20 and 248,632.80

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Solution

The fourth proportional to 323,368.80, 485,053.20 and 248,632.80 is: 372,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,368.80 : 485,053.20 = 248,632.80 : x
  2. Step 2: Convert to fraction form
    323,368.80/485,053.20 = 248,632.80/x
  3. Step 3: Cross multiply
    323,368.80x = 485,053.20 × 248,632.80
  4. Step 4: Simplify right side
    323,368.80x = 120,600,135,264.96
  5. Step 5: Solve for x
    x = 120,600,135,264.96/323,368.80
  6. Step 6: Final answer
    x = 372,949.20

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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.