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Finding the Fourth Proportional to 308,556.45, 462,868.71 and 98,145.18

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Solution

The fourth proportional to 308,556.45, 462,868.71 and 98,145.18 is: 147,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,556.45 : 462,868.71 = 98,145.18 : x
  2. Step 2: Convert to fraction form
    308,556.45/462,868.71 = 98,145.18/x
  3. Step 3: Cross multiply
    308,556.45x = 462,868.71 × 98,145.18
  4. Step 4: Simplify right side
    308,556.45x = 45,428,332,859.32
  5. Step 5: Solve for x
    x = 45,428,332,859.32/308,556.45
  6. Step 6: Final answer
    x = 147,228.60

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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.