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Finding the Fourth Proportional to 383,798.40, 574,963.20 and 206,246.40

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Solution

The fourth proportional to 383,798.40, 574,963.20 and 206,246.40 is: 308,974.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,798.40 : 574,963.20 = 206,246.40 : x
  2. Step 2: Convert to fraction form
    383,798.40/574,963.20 = 206,246.40/x
  3. Step 3: Cross multiply
    383,798.40x = 574,963.20 × 206,246.40
  4. Step 4: Simplify right side
    383,798.40x = 118,584,090,132.48
  5. Step 5: Solve for x
    x = 118,584,090,132.48/383,798.40
  6. Step 6: Final answer
    x = 308,974.95

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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.