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Finding the Fourth Proportional to 288,735.70, 433,103.55 and 78,399.70

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Solution

The fourth proportional to 288,735.70, 433,103.55 and 78,399.70 is: 117,599.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,735.70 : 433,103.55 = 78,399.70 : x
  2. Step 2: Convert to fraction form
    288,735.70/433,103.55 = 78,399.70/x
  3. Step 3: Cross multiply
    288,735.70x = 433,103.55 × 78,399.70
  4. Step 4: Simplify right side
    288,735.70x = 33,955,188,388.94
  5. Step 5: Solve for x
    x = 33,955,188,388.94/288,735.70
  6. Step 6: Final answer
    x = 117,599.55

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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.