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Finding the Fourth Proportional to 393,168.98, 588,867.12 and 275,366.06

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Solution

The fourth proportional to 393,168.98, 588,867.12 and 275,366.06 is: 412,428.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,168.98 : 588,867.12 = 275,366.06 : x
  2. Step 2: Convert to fraction form
    393,168.98/588,867.12 = 275,366.06/x
  3. Step 3: Cross multiply
    393,168.98x = 588,867.12 × 275,366.06
  4. Step 4: Simplify right side
    393,168.98x = 162,154,018,697.95
  5. Step 5: Solve for x
    x = 162,154,018,697.95/393,168.98
  6. Step 6: Final answer
    x = 412,428.31

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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.