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Finding the Fourth Proportional to 288,912.80, 433,401.60 and 89,231.60

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Solution

The fourth proportional to 288,912.80, 433,401.60 and 89,231.60 is: 133,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,912.80 : 433,401.60 = 89,231.60 : x
  2. Step 2: Convert to fraction form
    288,912.80/433,401.60 = 89,231.60/x
  3. Step 3: Cross multiply
    288,912.80x = 433,401.60 × 89,231.60
  4. Step 4: Simplify right side
    288,912.80x = 38,673,118,210.56
  5. Step 5: Solve for x
    x = 38,673,118,210.56/288,912.80
  6. Step 6: Final answer
    x = 133,857.41

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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.