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Finding the Fourth Proportional to 368,976.97, 553,626.28 and 129,262.84

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Solution

The fourth proportional to 368,976.97, 553,626.28 and 129,262.84 is: 193,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,976.97 : 553,626.28 = 129,262.84 : x
  2. Step 2: Convert to fraction form
    368,976.97/553,626.28 = 129,262.84/x
  3. Step 3: Cross multiply
    368,976.97x = 553,626.28 × 129,262.84
  4. Step 4: Simplify right side
    368,976.97x = 71,563,303,301.84
  5. Step 5: Solve for x
    x = 71,563,303,301.84/368,976.97
  6. Step 6: Final answer
    x = 193,950.60

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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.