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Finding the Fourth Proportional to 323,672.81, 486,312.29 and 209,893.01

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Solution

The fourth proportional to 323,672.81, 486,312.29 and 209,893.01 is: 315,360.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,672.81 : 486,312.29 = 209,893.01 : x
  2. Step 2: Convert to fraction form
    323,672.81/486,312.29 = 209,893.01/x
  3. Step 3: Cross multiply
    323,672.81x = 486,312.29 × 209,893.01
  4. Step 4: Simplify right side
    323,672.81x = 102,073,550,348.09
  5. Step 5: Solve for x
    x = 102,073,550,348.09/323,672.81
  6. Step 6: Final answer
    x = 315,360.29

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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.