Home / 280,828.80-421,243.20-247,613.74

Finding the Fourth Proportional to 280,828.80, 421,243.20 and 247,613.74

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Solution

The fourth proportional to 280,828.80, 421,243.20 and 247,613.74 is: 371,420.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,828.80 : 421,243.20 = 247,613.74 : x
  2. Step 2: Convert to fraction form
    280,828.80/421,243.20 = 247,613.74/x
  3. Step 3: Cross multiply
    280,828.80x = 421,243.20 × 247,613.74
  4. Step 4: Simplify right side
    280,828.80x = 104,305,603,148.46
  5. Step 5: Solve for x
    x = 104,305,603,148.46/280,828.80
  6. Step 6: Final answer
    x = 371,420.61

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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.