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Finding the Fourth Proportional to 288,936.40, 433,404.60 and 75,703.90

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Solution

The fourth proportional to 288,936.40, 433,404.60 and 75,703.90 is: 113,555.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,936.40 : 433,404.60 = 75,703.90 : x
  2. Step 2: Convert to fraction form
    288,936.40/433,404.60 = 75,703.90/x
  3. Step 3: Cross multiply
    288,936.40x = 433,404.60 × 75,703.90
  4. Step 4: Simplify right side
    288,936.40x = 32,810,418,497.94
  5. Step 5: Solve for x
    x = 32,810,418,497.94/288,936.40
  6. Step 6: Final answer
    x = 113,555.85

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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.