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Finding the Fourth Proportional to 200,326.76, 276,638.22 and 128,830.92

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Solution

The fourth proportional to 200,326.76, 276,638.22 and 128,830.92 is: 177,907.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,326.76 : 276,638.22 = 128,830.92 : x
  2. Step 2: Convert to fraction form
    200,326.76/276,638.22 = 128,830.92/x
  3. Step 3: Cross multiply
    200,326.76x = 276,638.22 × 128,830.92
  4. Step 4: Simplify right side
    200,326.76x = 35,639,556,389.76
  5. Step 5: Solve for x
    x = 35,639,556,389.76/200,326.76
  6. Step 6: Final answer
    x = 177,907.12

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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.