Home / 432,039.60-648,383.40-221,569.20

Finding the Fourth Proportional to 432,039.60, 648,383.40 and 221,569.20

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Solution

The fourth proportional to 432,039.60, 648,383.40 and 221,569.20 is: 332,519.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,039.60 : 648,383.40 = 221,569.20 : x
  2. Step 2: Convert to fraction form
    432,039.60/648,383.40 = 221,569.20/x
  3. Step 3: Cross multiply
    432,039.60x = 648,383.40 × 221,569.20
  4. Step 4: Simplify right side
    432,039.60x = 143,661,791,231.28
  5. Step 5: Solve for x
    x = 143,661,791,231.28/432,039.60
  6. Step 6: Final answer
    x = 332,519.96

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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.