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Finding the Fourth Proportional to 353,420.25, 487,820.22 and 208,310.37

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Solution

The fourth proportional to 353,420.25, 487,820.22 and 208,310.37 is: 287,527.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,420.25 : 487,820.22 = 208,310.37 : x
  2. Step 2: Convert to fraction form
    353,420.25/487,820.22 = 208,310.37/x
  3. Step 3: Cross multiply
    353,420.25x = 487,820.22 × 208,310.37
  4. Step 4: Simplify right side
    353,420.25x = 101,618,010,521.68
  5. Step 5: Solve for x
    x = 101,618,010,521.68/353,420.25
  6. Step 6: Final answer
    x = 287,527.41

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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.