Home / 209,217.78-288,711.22-118,568.43

Finding the Fourth Proportional to 209,217.78, 288,711.22 and 118,568.43

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Solution

The fourth proportional to 209,217.78, 288,711.22 and 118,568.43 is: 163,619.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,217.78 : 288,711.22 = 118,568.43 : x
  2. Step 2: Convert to fraction form
    209,217.78/288,711.22 = 118,568.43/x
  3. Step 3: Cross multiply
    209,217.78x = 288,711.22 × 118,568.43
  4. Step 4: Simplify right side
    209,217.78x = 34,232,036,078.78
  5. Step 5: Solve for x
    x = 34,232,036,078.78/209,217.78
  6. Step 6: Final answer
    x = 163,619.15

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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.