Home / 521,902.20-720,212.82-307,056.12

Finding the Fourth Proportional to 521,902.20, 720,212.82 and 307,056.12

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Solution

The fourth proportional to 521,902.20, 720,212.82 and 307,056.12 is: 423,730.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,902.20 : 720,212.82 = 307,056.12 : x
  2. Step 2: Convert to fraction form
    521,902.20/720,212.82 = 307,056.12/x
  3. Step 3: Cross multiply
    521,902.20x = 720,212.82 × 307,056.12
  4. Step 4: Simplify right side
    521,902.20x = 221,145,754,083.46
  5. Step 5: Solve for x
    x = 221,145,754,083.46/521,902.20
  6. Step 6: Final answer
    x = 423,730.26

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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.