Home / 393,844.81-543,286.98-258,097.72

Finding the Fourth Proportional to 393,844.81, 543,286.98 and 258,097.72

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Solution

The fourth proportional to 393,844.81, 543,286.98 and 258,097.72 is: 356,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,844.81 : 543,286.98 = 258,097.72 : x
  2. Step 2: Convert to fraction form
    393,844.81/543,286.98 = 258,097.72/x
  3. Step 3: Cross multiply
    393,844.81x = 543,286.98 × 258,097.72
  4. Step 4: Simplify right side
    393,844.81x = 140,221,128,127.25
  5. Step 5: Solve for x
    x = 140,221,128,127.25/393,844.81
  6. Step 6: Final answer
    x = 356,031.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.