Home / 487,945.20-731,699.10-221,568.60

Finding the Fourth Proportional to 487,945.20, 731,699.10 and 221,568.60

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Solution

The fourth proportional to 487,945.20, 731,699.10 and 221,568.60 is: 332,253.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,945.20 : 731,699.10 = 221,568.60 : x
  2. Step 2: Convert to fraction form
    487,945.20/731,699.10 = 221,568.60/x
  3. Step 3: Cross multiply
    487,945.20x = 731,699.10 × 221,568.60
  4. Step 4: Simplify right side
    487,945.20x = 162,121,545,208.26
  5. Step 5: Solve for x
    x = 162,121,545,208.26/487,945.20
  6. Step 6: Final answer
    x = 332,253.59

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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.