Home / 432,097.20-648,145.80-272,664.90

Finding the Fourth Proportional to 432,097.20, 648,145.80 and 272,664.90

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Solution

The fourth proportional to 432,097.20, 648,145.80 and 272,664.90 is: 408,997.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,097.20 : 648,145.80 = 272,664.90 : x
  2. Step 2: Convert to fraction form
    432,097.20/648,145.80 = 272,664.90/x
  3. Step 3: Cross multiply
    432,097.20x = 648,145.80 × 272,664.90
  4. Step 4: Simplify right side
    432,097.20x = 176,726,609,742.42
  5. Step 5: Solve for x
    x = 176,726,609,742.42/432,097.20
  6. Step 6: Final answer
    x = 408,997.35

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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.