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Finding the Fourth Proportional to 289,885.10, 434,611.65 and 149,744.30

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Solution

The fourth proportional to 289,885.10, 434,611.65 and 149,744.30 is: 224,504.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,885.10 : 434,611.65 = 149,744.30 : x
  2. Step 2: Convert to fraction form
    289,885.10/434,611.65 = 149,744.30/x
  3. Step 3: Cross multiply
    289,885.10x = 434,611.65 × 149,744.30
  4. Step 4: Simplify right side
    289,885.10x = 65,080,617,301.10
  5. Step 5: Solve for x
    x = 65,080,617,301.10/289,885.10
  6. Step 6: Final answer
    x = 224,504.87

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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.