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Finding the Fourth Proportional to 351,531.79, 485,113.72 and 190,386.84

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Solution

The fourth proportional to 351,531.79, 485,113.72 and 190,386.84 is: 262,733.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,531.79 : 485,113.72 = 190,386.84 : x
  2. Step 2: Convert to fraction form
    351,531.79/485,113.72 = 190,386.84/x
  3. Step 3: Cross multiply
    351,531.79x = 485,113.72 × 190,386.84
  4. Step 4: Simplify right side
    351,531.79x = 92,359,268,191.44
  5. Step 5: Solve for x
    x = 92,359,268,191.44/351,531.79
  6. Step 6: Final answer
    x = 262,733.76

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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.