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Finding the Fourth Proportional to 366,921.60, 550,479.60 and 130,239.60

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Solution

The fourth proportional to 366,921.60, 550,479.60 and 130,239.60 is: 195,393.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,921.60 : 550,479.60 = 130,239.60 : x
  2. Step 2: Convert to fraction form
    366,921.60/550,479.60 = 130,239.60/x
  3. Step 3: Cross multiply
    366,921.60x = 550,479.60 × 130,239.60
  4. Step 4: Simplify right side
    366,921.60x = 71,694,242,912.16
  5. Step 5: Solve for x
    x = 71,694,242,912.16/366,921.60
  6. Step 6: Final answer
    x = 195,393.90

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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.