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Finding the Fourth Proportional to 345,576.60, 518,364.90 and 146,122.20

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Solution

The fourth proportional to 345,576.60, 518,364.90 and 146,122.20 is: 219,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,576.60 : 518,364.90 = 146,122.20 : x
  2. Step 2: Convert to fraction form
    345,576.60/518,364.90 = 146,122.20/x
  3. Step 3: Cross multiply
    345,576.60x = 518,364.90 × 146,122.20
  4. Step 4: Simplify right side
    345,576.60x = 75,744,619,590.78
  5. Step 5: Solve for x
    x = 75,744,619,590.78/345,576.60
  6. Step 6: Final answer
    x = 219,183.30

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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.