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Finding the Fourth Proportional to 245,879.11, 368,691.81 and 112,645.19

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Solution

The fourth proportional to 245,879.11, 368,691.81 and 112,645.19 is: 168,909.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,879.11 : 368,691.81 = 112,645.19 : x
  2. Step 2: Convert to fraction form
    245,879.11/368,691.81 = 112,645.19/x
  3. Step 3: Cross multiply
    245,879.11x = 368,691.81 × 112,645.19
  4. Step 4: Simplify right side
    245,879.11x = 41,531,360,085.88
  5. Step 5: Solve for x
    x = 41,531,360,085.88/245,879.11
  6. Step 6: Final answer
    x = 168,909.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.