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Finding the Fourth Proportional to 351,538.17, 485,122.50 and 190,393.20

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Solution

The fourth proportional to 351,538.17, 485,122.50 and 190,393.20 is: 262,742.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,538.17 : 485,122.50 = 190,393.20 : x
  2. Step 2: Convert to fraction form
    351,538.17/485,122.50 = 190,393.20/x
  3. Step 3: Cross multiply
    351,538.17x = 485,122.50 × 190,393.20
  4. Step 4: Simplify right side
    351,538.17x = 92,364,025,167
  5. Step 5: Solve for x
    x = 92,364,025,167/351,538.17
  6. Step 6: Final answer
    x = 262,742.52

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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.