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Finding the Fourth Proportional to 308,244.07, 462,366.10 and 86,628.07

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Solution

The fourth proportional to 308,244.07, 462,366.10 and 86,628.07 is: 129,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,244.07 : 462,366.10 = 86,628.07 : x
  2. Step 2: Convert to fraction form
    308,244.07/462,366.10 = 86,628.07/x
  3. Step 3: Cross multiply
    308,244.07x = 462,366.10 × 86,628.07
  4. Step 4: Simplify right side
    308,244.07x = 40,053,880,564.60
  5. Step 5: Solve for x
    x = 40,053,880,564.60/308,244.07
  6. Step 6: Final answer
    x = 129,942.10

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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.