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Finding the Fourth Proportional to 368,977.97, 553,627.78 and 129,263.84

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Solution

The fourth proportional to 368,977.97, 553,627.78 and 129,263.84 is: 193,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,977.97 : 553,627.78 = 129,263.84 : x
  2. Step 2: Convert to fraction form
    368,977.97/553,627.78 = 129,263.84/x
  3. Step 3: Cross multiply
    368,977.97x = 553,627.78 × 129,263.84
  4. Step 4: Simplify right side
    368,977.97x = 71,564,052,773.48
  5. Step 5: Solve for x
    x = 71,564,052,773.48/368,977.97
  6. Step 6: Final answer
    x = 193,952.10

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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.