Home / 209,357.31-288,914.45-113,864.70

Finding the Fourth Proportional to 209,357.31, 288,914.45 and 113,864.70

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Solution

The fourth proportional to 209,357.31, 288,914.45 and 113,864.70 is: 157,134.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,357.31 : 288,914.45 = 113,864.70 : x
  2. Step 2: Convert to fraction form
    209,357.31/288,914.45 = 113,864.70/x
  3. Step 3: Cross multiply
    209,357.31x = 288,914.45 × 113,864.70
  4. Step 4: Simplify right side
    209,357.31x = 32,897,157,459.58
  5. Step 5: Solve for x
    x = 32,897,157,459.58/209,357.31
  6. Step 6: Final answer
    x = 157,134.03

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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.