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Finding the Fourth Proportional to 398,767.68, 550,277.42 and 226,661.72

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Solution

The fourth proportional to 398,767.68, 550,277.42 and 226,661.72 is: 312,780.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,767.68 : 550,277.42 = 226,661.72 : x
  2. Step 2: Convert to fraction form
    398,767.68/550,277.42 = 226,661.72/x
  3. Step 3: Cross multiply
    398,767.68x = 550,277.42 × 226,661.72
  4. Step 4: Simplify right side
    398,767.68x = 124,726,822,609.67
  5. Step 5: Solve for x
    x = 124,726,822,609.67/398,767.68
  6. Step 6: Final answer
    x = 312,780.67

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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.