Home / 282,980.05-390,541.11-162,137.36

Finding the Fourth Proportional to 282,980.05, 390,541.11 and 162,137.36

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Solution

The fourth proportional to 282,980.05, 390,541.11 and 162,137.36 is: 223,765.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,980.05 : 390,541.11 = 162,137.36 : x
  2. Step 2: Convert to fraction form
    282,980.05/390,541.11 = 162,137.36/x
  3. Step 3: Cross multiply
    282,980.05x = 390,541.11 × 162,137.36
  4. Step 4: Simplify right side
    282,980.05x = 63,321,304,546.87
  5. Step 5: Solve for x
    x = 63,321,304,546.87/282,980.05
  6. Step 6: Final answer
    x = 223,765.97

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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.