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Finding the Fourth Proportional to 200,025.10, 275,904.57 and 128,291.50

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Solution

The fourth proportional to 200,025.10, 275,904.57 and 128,291.50 is: 176,958.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,025.10 : 275,904.57 = 128,291.50 : x
  2. Step 2: Convert to fraction form
    200,025.10/275,904.57 = 128,291.50/x
  3. Step 3: Cross multiply
    200,025.10x = 275,904.57 × 128,291.50
  4. Step 4: Simplify right side
    200,025.10x = 35,396,211,142.16
  5. Step 5: Solve for x
    x = 35,396,211,142.16/200,025.10
  6. Step 6: Final answer
    x = 176,958.85

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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.