Home / 321,790.38-442,496.04-279,275.10

Finding the Fourth Proportional to 321,790.38, 442,496.04 and 279,275.10

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Solution

The fourth proportional to 321,790.38, 442,496.04 and 279,275.10 is: 384,033.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,790.38 : 442,496.04 = 279,275.10 : x
  2. Step 2: Convert to fraction form
    321,790.38/442,496.04 = 279,275.10/x
  3. Step 3: Cross multiply
    321,790.38x = 442,496.04 × 279,275.10
  4. Step 4: Simplify right side
    321,790.38x = 123,578,125,820.60
  5. Step 5: Solve for x
    x = 123,578,125,820.60/321,790.38
  6. Step 6: Final answer
    x = 384,033.00

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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.