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Finding the Fourth Proportional to 351,659.31, 485,289.25 and 190,518.45

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Solution

The fourth proportional to 351,659.31, 485,289.25 and 190,518.45 is: 262,915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,659.31 : 485,289.25 = 190,518.45 : x
  2. Step 2: Convert to fraction form
    351,659.31/485,289.25 = 190,518.45/x
  3. Step 3: Cross multiply
    351,659.31x = 485,289.25 × 190,518.45
  4. Step 4: Simplify right side
    351,659.31x = 92,456,555,711.66
  5. Step 5: Solve for x
    x = 92,456,555,711.66/351,659.31
  6. Step 6: Final answer
    x = 262,915.14

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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.