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Finding the Fourth Proportional to 209,295.80, 313,936.59 and 90,967.13

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Solution

The fourth proportional to 209,295.80, 313,936.59 and 90,967.13 is: 136,447.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,295.80 : 313,936.59 = 90,967.13 : x
  2. Step 2: Convert to fraction form
    209,295.80/313,936.59 = 90,967.13/x
  3. Step 3: Cross multiply
    209,295.80x = 313,936.59 × 90,967.13
  4. Step 4: Simplify right side
    209,295.80x = 28,557,910,594.29
  5. Step 5: Solve for x
    x = 28,557,910,594.29/209,295.80
  6. Step 6: Final answer
    x = 136,447.60

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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.