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Finding the Fourth Proportional to 486,168.54, 729,330.57 and 205,688.22

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Solution

The fourth proportional to 486,168.54, 729,330.57 and 205,688.22 is: 308,565.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,168.54 : 729,330.57 = 205,688.22 : x
  2. Step 2: Convert to fraction form
    486,168.54/729,330.57 = 205,688.22/x
  3. Step 3: Cross multiply
    486,168.54x = 729,330.57 × 205,688.22
  4. Step 4: Simplify right side
    486,168.54x = 150,014,706,734.89
  5. Step 5: Solve for x
    x = 150,014,706,734.89/486,168.54
  6. Step 6: Final answer
    x = 308,565.23

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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.