Home / 487,982.20-731,754.60-221,605.60

Finding the Fourth Proportional to 487,982.20, 731,754.60 and 221,605.60

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Solution

The fourth proportional to 487,982.20, 731,754.60 and 221,605.60 is: 332,309.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,982.20 : 731,754.60 = 221,605.60 : x
  2. Step 2: Convert to fraction form
    487,982.20/731,754.60 = 221,605.60/x
  3. Step 3: Cross multiply
    487,982.20x = 731,754.60 × 221,605.60
  4. Step 4: Simplify right side
    487,982.20x = 162,160,917,185.76
  5. Step 5: Solve for x
    x = 162,160,917,185.76/487,982.20
  6. Step 6: Final answer
    x = 332,309.08

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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.