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Finding the Fourth Proportional to 366,906.40, 550,359.60 and 260,618.20

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Solution

The fourth proportional to 366,906.40, 550,359.60 and 260,618.20 is: 390,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,906.40 : 550,359.60 = 260,618.20 : x
  2. Step 2: Convert to fraction form
    366,906.40/550,359.60 = 260,618.20/x
  3. Step 3: Cross multiply
    366,906.40x = 550,359.60 × 260,618.20
  4. Step 4: Simplify right side
    366,906.40x = 143,433,728,304.72
  5. Step 5: Solve for x
    x = 143,433,728,304.72/366,906.40
  6. Step 6: Final answer
    x = 390,927.30

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Similar ratio
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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.