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Finding the Fourth Proportional to 483,705.49, 725,574.62 and 128,719.85

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Solution

The fourth proportional to 483,705.49, 725,574.62 and 128,719.85 is: 193,084.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,705.49 : 725,574.62 = 128,719.85 : x
  2. Step 2: Convert to fraction form
    483,705.49/725,574.62 = 128,719.85/x
  3. Step 3: Cross multiply
    483,705.49x = 725,574.62 × 128,719.85
  4. Step 4: Simplify right side
    483,705.49x = 93,395,856,250.21
  5. Step 5: Solve for x
    x = 93,395,856,250.21/483,705.49
  6. Step 6: Final answer
    x = 193,084.14

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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.