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Finding the Fourth Proportional to 202,019.14, 278,788.36 and 111,378.62

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Solution

The fourth proportional to 202,019.14, 278,788.36 and 111,378.62 is: 153,703.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,019.14 : 278,788.36 = 111,378.62 : x
  2. Step 2: Convert to fraction form
    202,019.14/278,788.36 = 111,378.62/x
  3. Step 3: Cross multiply
    202,019.14x = 278,788.36 × 111,378.62
  4. Step 4: Simplify right side
    202,019.14x = 31,051,063,227.39
  5. Step 5: Solve for x
    x = 31,051,063,227.39/202,019.14
  6. Step 6: Final answer
    x = 153,703.57

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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.