Home / 209,220.90-288,721.44-113,730

Finding the Fourth Proportional to 209,220.90, 288,721.44 and 113,730

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Solution

The fourth proportional to 209,220.90, 288,721.44 and 113,730 is: 156,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,220.90 : 288,721.44 = 113,730 : x
  2. Step 2: Convert to fraction form
    209,220.90/288,721.44 = 113,730/x
  3. Step 3: Cross multiply
    209,220.90x = 288,721.44 × 113,730
  4. Step 4: Simplify right side
    209,220.90x = 32,836,289,371.20
  5. Step 5: Solve for x
    x = 32,836,289,371.20/209,220.90
  6. Step 6: Final answer
    x = 156,945.55

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1.5x scale

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.