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Finding the Fourth Proportional to 286,341.88, 429,512.28 and 75,963.28

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Solution

The fourth proportional to 286,341.88, 429,512.28 and 75,963.28 is: 113,944.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,341.88 : 429,512.28 = 75,963.28 : x
  2. Step 2: Convert to fraction form
    286,341.88/429,512.28 = 75,963.28/x
  3. Step 3: Cross multiply
    286,341.88x = 429,512.28 × 75,963.28
  4. Step 4: Simplify right side
    286,341.88x = 32,627,161,589.08
  5. Step 5: Solve for x
    x = 32,627,161,589.08/286,341.88
  6. Step 6: Final answer
    x = 113,944.78

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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.