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Finding the Fourth Proportional to 642,468.69, 963,024.87 and 215,599.78

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Solution

The fourth proportional to 642,468.69, 963,024.87 and 215,599.78 is: 323,172.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,468.69 : 963,024.87 = 215,599.78 : x
  2. Step 2: Convert to fraction form
    642,468.69/963,024.87 = 215,599.78/x
  3. Step 3: Cross multiply
    642,468.69x = 963,024.87 × 215,599.78
  4. Step 4: Simplify right side
    642,468.69x = 207,627,946,095.42
  5. Step 5: Solve for x
    x = 207,627,946,095.42/642,468.69
  6. Step 6: Final answer
    x = 323,172.09

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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.