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Finding the Fourth Proportional to 286,350.85, 429,619.71 and 136,571.68

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Solution

The fourth proportional to 286,350.85, 429,619.71 and 136,571.68 is: 204,902.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,350.85 : 429,619.71 = 136,571.68 : x
  2. Step 2: Convert to fraction form
    286,350.85/429,619.71 = 136,571.68/x
  3. Step 3: Cross multiply
    286,350.85x = 429,619.71 × 136,571.68
  4. Step 4: Simplify right side
    286,350.85x = 58,673,886,288.43
  5. Step 5: Solve for x
    x = 58,673,886,288.43/286,350.85
  6. Step 6: Final answer
    x = 204,902.08

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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.