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Finding the Fourth Proportional to 308,556.95, 462,869.45 and 98,145.68

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Solution

The fourth proportional to 308,556.95, 462,869.45 and 98,145.68 is: 147,229.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,556.95 : 462,869.45 = 98,145.68 : x
  2. Step 2: Convert to fraction form
    308,556.95/462,869.45 = 98,145.68/x
  3. Step 3: Cross multiply
    308,556.95x = 462,869.45 × 98,145.68
  4. Step 4: Simplify right side
    308,556.95x = 45,428,636,921.48
  5. Step 5: Solve for x
    x = 45,428,636,921.48/308,556.95
  6. Step 6: Final answer
    x = 147,229.34

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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.