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Finding the Fourth Proportional to 288,874.69, 433,414.59 and 128,936.06

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Solution

The fourth proportional to 288,874.69, 433,414.59 and 128,936.06 is: 193,449.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,874.69 : 433,414.59 = 128,936.06 : x
  2. Step 2: Convert to fraction form
    288,874.69/433,414.59 = 128,936.06/x
  3. Step 3: Cross multiply
    288,874.69x = 433,414.59 × 128,936.06
  4. Step 4: Simplify right side
    288,874.69x = 55,882,769,581.12
  5. Step 5: Solve for x
    x = 55,882,769,581.12/288,874.69
  6. Step 6: Final answer
    x = 193,449.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.