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Finding the Fourth Proportional to 309,626.60, 464,439.90 and 132,479.60

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Solution

The fourth proportional to 309,626.60, 464,439.90 and 132,479.60 is: 198,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,626.60 : 464,439.90 = 132,479.60 : x
  2. Step 2: Convert to fraction form
    309,626.60/464,439.90 = 132,479.60/x
  3. Step 3: Cross multiply
    309,626.60x = 464,439.90 × 132,479.60
  4. Step 4: Simplify right side
    309,626.60x = 61,528,812,176.04
  5. Step 5: Solve for x
    x = 61,528,812,176.04/309,626.60
  6. Step 6: Final answer
    x = 198,719.40

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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.