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Finding the Fourth Proportional to 366,900.90, 550,351.35 and 260,612.70

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Solution

The fourth proportional to 366,900.90, 550,351.35 and 260,612.70 is: 390,919.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,900.90 : 550,351.35 = 260,612.70 : x
  2. Step 2: Convert to fraction form
    366,900.90/550,351.35 = 260,612.70/x
  3. Step 3: Cross multiply
    366,900.90x = 550,351.35 × 260,612.70
  4. Step 4: Simplify right side
    366,900.90x = 143,428,551,272.15
  5. Step 5: Solve for x
    x = 143,428,551,272.15/366,900.90
  6. Step 6: Final answer
    x = 390,919.05

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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.