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Finding the Fourth Proportional to 351,679.60, 485,317.20 and 190,538.66

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Solution

The fourth proportional to 351,679.60, 485,317.20 and 190,538.66 is: 262,943.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,679.60 : 485,317.20 = 190,538.66 : x
  2. Step 2: Convert to fraction form
    351,679.60/485,317.20 = 190,538.66/x
  3. Step 3: Cross multiply
    351,679.60x = 485,317.20 × 190,538.66
  4. Step 4: Simplify right side
    351,679.60x = 92,471,688,962.95
  5. Step 5: Solve for x
    x = 92,471,688,962.95/351,679.60
  6. Step 6: Final answer
    x = 262,943.00

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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.