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Finding the Fourth Proportional to 352,990.90, 487,131.21 and 191,845.96

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Solution

The fourth proportional to 352,990.90, 487,131.21 and 191,845.96 is: 264,749.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,990.90 : 487,131.21 = 191,845.96 : x
  2. Step 2: Convert to fraction form
    352,990.90/487,131.21 = 191,845.96/x
  3. Step 3: Cross multiply
    352,990.90x = 487,131.21 × 191,845.96
  4. Step 4: Simplify right side
    352,990.90x = 93,454,154,628.41
  5. Step 5: Solve for x
    x = 93,454,154,628.41/352,990.90
  6. Step 6: Final answer
    x = 264,749.47

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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.