Home / 209,288.20-313,925.36-90,959.68

Finding the Fourth Proportional to 209,288.20, 313,925.36 and 90,959.68

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Solution

The fourth proportional to 209,288.20, 313,925.36 and 90,959.68 is: 136,436.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,288.20 : 313,925.36 = 90,959.68 : x
  2. Step 2: Convert to fraction form
    209,288.20/313,925.36 = 90,959.68/x
  3. Step 3: Cross multiply
    209,288.20x = 313,925.36 × 90,959.68
  4. Step 4: Simplify right side
    209,288.20x = 28,554,550,289.48
  5. Step 5: Solve for x
    x = 28,554,550,289.48/209,288.20
  6. Step 6: Final answer
    x = 136,436.50

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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.