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Finding the Fourth Proportional to 398,414.25, 549,811.67 and 219,566.25

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Solution

The fourth proportional to 398,414.25, 549,811.67 and 219,566.25 is: 303,001.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,414.25 : 549,811.67 = 219,566.25 : x
  2. Step 2: Convert to fraction form
    398,414.25/549,811.67 = 219,566.25/x
  3. Step 3: Cross multiply
    398,414.25x = 549,811.67 × 219,566.25
  4. Step 4: Simplify right side
    398,414.25x = 120,720,085,490.31
  5. Step 5: Solve for x
    x = 120,720,085,490.31/398,414.25
  6. Step 6: Final answer
    x = 303,001.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.