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Finding the Fourth Proportional to 313,625.80, 469,920.30 and 266,969.80

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Solution

The fourth proportional to 313,625.80, 469,920.30 and 266,969.80 is: 400,013.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,625.80 : 469,920.30 = 266,969.80 : x
  2. Step 2: Convert to fraction form
    313,625.80/469,920.30 = 266,969.80/x
  3. Step 3: Cross multiply
    313,625.80x = 469,920.30 × 266,969.80
  4. Step 4: Simplify right side
    313,625.80x = 125,454,528,506.94
  5. Step 5: Solve for x
    x = 125,454,528,506.94/313,625.80
  6. Step 6: Final answer
    x = 400,013.42

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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.