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Finding the Fourth Proportional to 289,581.80, 434,358.30 and 149,354.60

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Solution

The fourth proportional to 289,581.80, 434,358.30 and 149,354.60 is: 224,024.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,581.80 : 434,358.30 = 149,354.60 : x
  2. Step 2: Convert to fraction form
    289,581.80/434,358.30 = 149,354.60/x
  3. Step 3: Cross multiply
    289,581.80x = 434,358.30 × 149,354.60
  4. Step 4: Simplify right side
    289,581.80x = 64,873,410,153.18
  5. Step 5: Solve for x
    x = 64,873,410,153.18/289,581.80
  6. Step 6: Final answer
    x = 224,024.47

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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.