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Finding the Fourth Proportional to 642,468.97, 963,025.29 and 215,600.06

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Solution

The fourth proportional to 642,468.97, 963,025.29 and 215,600.06 is: 323,172.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,468.97 : 963,025.29 = 215,600.06 : x
  2. Step 2: Convert to fraction form
    642,468.97/963,025.29 = 215,600.06/x
  3. Step 3: Cross multiply
    642,468.97x = 963,025.29 × 215,600.06
  4. Step 4: Simplify right side
    642,468.97x = 207,628,307,902.44
  5. Step 5: Solve for x
    x = 207,628,307,902.44/642,468.97
  6. Step 6: Final answer
    x = 323,172.51

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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.