Home / 525,876.20-725,766.82-305,162.11

Finding the Fourth Proportional to 525,876.20, 725,766.82 and 305,162.11

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Solution

The fourth proportional to 525,876.20, 725,766.82 and 305,162.11 is: 421,157.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,876.20 : 725,766.82 = 305,162.11 : x
  2. Step 2: Convert to fraction form
    525,876.20/725,766.82 = 305,162.11/x
  3. Step 3: Cross multiply
    525,876.20x = 725,766.82 × 305,162.11
  4. Step 4: Simplify right side
    525,876.20x = 221,476,534,159.19
  5. Step 5: Solve for x
    x = 221,476,534,159.19/525,876.20
  6. Step 6: Final answer
    x = 421,157.17

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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.