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Finding the Fourth Proportional to 323,469.80, 485,075.10 and 112,999.40

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Solution

The fourth proportional to 323,469.80, 485,075.10 and 112,999.40 is: 169,453.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,469.80 : 485,075.10 = 112,999.40 : x
  2. Step 2: Convert to fraction form
    323,469.80/485,075.10 = 112,999.40/x
  3. Step 3: Cross multiply
    323,469.80x = 485,075.10 × 112,999.40
  4. Step 4: Simplify right side
    323,469.80x = 54,813,195,254.94
  5. Step 5: Solve for x
    x = 54,813,195,254.94/323,469.80
  6. Step 6: Final answer
    x = 169,453.83

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1.5x scale

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.