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Finding the Fourth Proportional to 366,906.90, 550,360.35 and 260,618.70

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Solution

The fourth proportional to 366,906.90, 550,360.35 and 260,618.70 is: 390,928.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,906.90 : 550,360.35 = 260,618.70 : x
  2. Step 2: Convert to fraction form
    366,906.90/550,360.35 = 260,618.70/x
  3. Step 3: Cross multiply
    366,906.90x = 550,360.35 × 260,618.70
  4. Step 4: Simplify right side
    366,906.90x = 143,434,198,948.55
  5. Step 5: Solve for x
    x = 143,434,198,948.55/366,906.90
  6. Step 6: Final answer
    x = 390,928.05

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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.