Home / 209,440.80-314,161.20-120,867.30

Finding the Fourth Proportional to 209,440.80, 314,161.20 and 120,867.30

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Solution

The fourth proportional to 209,440.80, 314,161.20 and 120,867.30 is: 181,300.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,440.80 : 314,161.20 = 120,867.30 : x
  2. Step 2: Convert to fraction form
    209,440.80/314,161.20 = 120,867.30/x
  3. Step 3: Cross multiply
    209,440.80x = 314,161.20 × 120,867.30
  4. Step 4: Simplify right side
    209,440.80x = 37,971,816,008.76
  5. Step 5: Solve for x
    x = 37,971,816,008.76/209,440.80
  6. Step 6: Final answer
    x = 181,300.95

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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.