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Finding the Fourth Proportional to 393,572.76, 587,289.45 and 351,161.40

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Solution

The fourth proportional to 393,572.76, 587,289.45 and 351,161.40 is: 524,003.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,572.76 : 587,289.45 = 351,161.40 : x
  2. Step 2: Convert to fraction form
    393,572.76/587,289.45 = 351,161.40/x
  3. Step 3: Cross multiply
    393,572.76x = 587,289.45 × 351,161.40
  4. Step 4: Simplify right side
    393,572.76x = 206,233,385,467.23
  5. Step 5: Solve for x
    x = 206,233,385,467.23/393,572.76
  6. Step 6: Final answer
    x = 524,003.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.