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Finding the Fourth Proportional to 289,441.02, 434,223.90 and 89,757.39

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Solution

The fourth proportional to 289,441.02, 434,223.90 and 89,757.39 is: 134,655.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,441.02 : 434,223.90 = 89,757.39 : x
  2. Step 2: Convert to fraction form
    289,441.02/434,223.90 = 89,757.39/x
  3. Step 3: Cross multiply
    289,441.02x = 434,223.90 × 89,757.39
  4. Step 4: Simplify right side
    289,441.02x = 38,974,803,939.62
  5. Step 5: Solve for x
    x = 38,974,803,939.62/289,441.02
  6. Step 6: Final answer
    x = 134,655.43

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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.