Home / 487,857.20-731,567.10-221,480.60

Finding the Fourth Proportional to 487,857.20, 731,567.10 and 221,480.60

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Solution

The fourth proportional to 487,857.20, 731,567.10 and 221,480.60 is: 332,121.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,857.20 : 731,567.10 = 221,480.60 : x
  2. Step 2: Convert to fraction form
    487,857.20/731,567.10 = 221,480.60/x
  3. Step 3: Cross multiply
    487,857.20x = 731,567.10 × 221,480.60
  4. Step 4: Simplify right side
    487,857.20x = 162,027,920,248.26
  5. Step 5: Solve for x
    x = 162,027,920,248.26/487,857.20
  6. Step 6: Final answer
    x = 332,121.61

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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.