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Finding the Fourth Proportional to 306,120.60, 459,180.90 and 119,132.10

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Solution

The fourth proportional to 306,120.60, 459,180.90 and 119,132.10 is: 178,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,120.60 : 459,180.90 = 119,132.10 : x
  2. Step 2: Convert to fraction form
    306,120.60/459,180.90 = 119,132.10/x
  3. Step 3: Cross multiply
    306,120.60x = 459,180.90 × 119,132.10
  4. Step 4: Simplify right side
    306,120.60x = 54,703,184,896.89
  5. Step 5: Solve for x
    x = 54,703,184,896.89/306,120.60
  6. Step 6: Final answer
    x = 178,698.15

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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.