Home / 209,411.43-288,987.55-113,917.90

Finding the Fourth Proportional to 209,411.43, 288,987.55 and 113,917.90

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Solution

The fourth proportional to 209,411.43, 288,987.55 and 113,917.90 is: 157,206.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,411.43 : 288,987.55 = 113,917.90 : x
  2. Step 2: Convert to fraction form
    209,411.43/288,987.55 = 113,917.90/x
  3. Step 3: Cross multiply
    209,411.43x = 288,987.55 × 113,917.90
  4. Step 4: Simplify right side
    209,411.43x = 32,920,854,822.15
  5. Step 5: Solve for x
    x = 32,920,854,822.15/209,411.43
  6. Step 6: Final answer
    x = 157,206.58

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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.