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Finding the Fourth Proportional to 366,916.90, 550,375.35 and 260,628.70

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Solution

The fourth proportional to 366,916.90, 550,375.35 and 260,628.70 is: 390,943.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,916.90 : 550,375.35 = 260,628.70 : x
  2. Step 2: Convert to fraction form
    366,916.90/550,375.35 = 260,628.70/x
  3. Step 3: Cross multiply
    366,916.90x = 550,375.35 × 260,628.70
  4. Step 4: Simplify right side
    366,916.90x = 143,443,611,982.55
  5. Step 5: Solve for x
    x = 143,443,611,982.55/366,916.90
  6. Step 6: Final answer
    x = 390,943.05

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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.