Home / 209,001.97-288,421.45-113,507.83

Finding the Fourth Proportional to 209,001.97, 288,421.45 and 113,507.83

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Solution

The fourth proportional to 209,001.97, 288,421.45 and 113,507.83 is: 156,640.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,001.97 : 288,421.45 = 113,507.83 : x
  2. Step 2: Convert to fraction form
    209,001.97/288,421.45 = 113,507.83/x
  3. Step 3: Cross multiply
    209,001.97x = 288,421.45 × 113,507.83
  4. Step 4: Simplify right side
    209,001.97x = 32,738,092,914.95
  5. Step 5: Solve for x
    x = 32,738,092,914.95/209,001.97
  6. Step 6: Final answer
    x = 156,640.12

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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.