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Finding the Fourth Proportional to 366,908.90, 550,363.35 and 260,620.70

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Solution

The fourth proportional to 366,908.90, 550,363.35 and 260,620.70 is: 390,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,908.90 : 550,363.35 = 260,620.70 : x
  2. Step 2: Convert to fraction form
    366,908.90/550,363.35 = 260,620.70/x
  3. Step 3: Cross multiply
    366,908.90x = 550,363.35 × 260,620.70
  4. Step 4: Simplify right side
    366,908.90x = 143,436,081,531.35
  5. Step 5: Solve for x
    x = 143,436,081,531.35/366,908.90
  6. Step 6: Final answer
    x = 390,931.05

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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.