Home / 209,637.80-289,387.10-158,664.75

Finding the Fourth Proportional to 209,637.80, 289,387.10 and 158,664.75

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Solution

The fourth proportional to 209,637.80, 289,387.10 and 158,664.75 is: 219,023.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,637.80 : 289,387.10 = 158,664.75 : x
  2. Step 2: Convert to fraction form
    209,637.80/289,387.10 = 158,664.75/x
  3. Step 3: Cross multiply
    209,637.80x = 289,387.10 × 158,664.75
  4. Step 4: Simplify right side
    209,637.80x = 45,915,531,081.40
  5. Step 5: Solve for x
    x = 45,915,531,081.40/209,637.80
  6. Step 6: Final answer
    x = 219,023.15

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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.