Home / 200,450.80-276,488.92-128,921.32

Finding the Fourth Proportional to 200,450.80, 276,488.92 and 128,921.32

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Solution

The fourth proportional to 200,450.80, 276,488.92 and 128,921.32 is: 177,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,450.80 : 276,488.92 = 128,921.32 : x
  2. Step 2: Convert to fraction form
    200,450.80/276,488.92 = 128,921.32/x
  3. Step 3: Cross multiply
    200,450.80x = 276,488.92 × 128,921.32
  4. Step 4: Simplify right side
    200,450.80x = 35,645,316,531.77
  5. Step 5: Solve for x
    x = 35,645,316,531.77/200,450.80
  6. Step 6: Final answer
    x = 177,825.76

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1.5x scale

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.