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Finding the Fourth Proportional to 664,376.10, 996,402.15 and 191,012.10

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Solution

The fourth proportional to 664,376.10, 996,402.15 and 191,012.10 is: 286,471.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,376.10 : 996,402.15 = 191,012.10 : x
  2. Step 2: Convert to fraction form
    664,376.10/996,402.15 = 191,012.10/x
  3. Step 3: Cross multiply
    664,376.10x = 996,402.15 × 191,012.10
  4. Step 4: Simplify right side
    664,376.10x = 190,324,867,116.02
  5. Step 5: Solve for x
    x = 190,324,867,116.02/664,376.10
  6. Step 6: Final answer
    x = 286,471.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.