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Finding the Fourth Proportional to 366,989.30, 550,483.95 and 311,002.10

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Solution

The fourth proportional to 366,989.30, 550,483.95 and 311,002.10 is: 466,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,989.30 : 550,483.95 = 311,002.10 : x
  2. Step 2: Convert to fraction form
    366,989.30/550,483.95 = 311,002.10/x
  3. Step 3: Cross multiply
    366,989.30x = 550,483.95 × 311,002.10
  4. Step 4: Simplify right side
    366,989.30x = 171,201,664,466.30
  5. Step 5: Solve for x
    x = 171,201,664,466.30/366,989.30
  6. Step 6: Final answer
    x = 466,503.15

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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.