Home / 370,991.13-511,967.78-209,842.71

Finding the Fourth Proportional to 370,991.13, 511,967.78 and 209,842.71

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Solution

The fourth proportional to 370,991.13, 511,967.78 and 209,842.71 is: 289,582.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,991.13 : 511,967.78 = 209,842.71 : x
  2. Step 2: Convert to fraction form
    370,991.13/511,967.78 = 209,842.71/x
  3. Step 3: Cross multiply
    370,991.13x = 511,967.78 × 209,842.71
  4. Step 4: Simplify right side
    370,991.13x = 107,432,706,387.88
  5. Step 5: Solve for x
    x = 107,432,706,387.88/370,991.13
  6. Step 6: Final answer
    x = 289,582.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.