Home / 280,634.45-421,117.68-103,265.96

Finding the Fourth Proportional to 280,634.45, 421,117.68 and 103,265.96

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Solution

The fourth proportional to 280,634.45, 421,117.68 and 103,265.96 is: 154,960.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,634.45 : 421,117.68 = 103,265.96 : x
  2. Step 2: Convert to fraction form
    280,634.45/421,117.68 = 103,265.96/x
  3. Step 3: Cross multiply
    280,634.45x = 421,117.68 × 103,265.96
  4. Step 4: Simplify right side
    280,634.45x = 43,487,121,498.17
  5. Step 5: Solve for x
    x = 43,487,121,498.17/280,634.45
  6. Step 6: Final answer
    x = 154,960.03

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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.