Home / 209,288.09-313,925.12-90,959.42

Finding the Fourth Proportional to 209,288.09, 313,925.12 and 90,959.42

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Solution

The fourth proportional to 209,288.09, 313,925.12 and 90,959.42 is: 136,436.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,288.09 : 313,925.12 = 90,959.42 : x
  2. Step 2: Convert to fraction form
    209,288.09/313,925.12 = 90,959.42/x
  3. Step 3: Cross multiply
    209,288.09x = 313,925.12 × 90,959.42
  4. Step 4: Simplify right side
    209,288.09x = 28,554,446,383.83
  5. Step 5: Solve for x
    x = 28,554,446,383.83/209,288.09
  6. Step 6: Final answer
    x = 136,436.08

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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.