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Finding the Fourth Proportional to 268,472.20, 402,362.70 and 205,832.20

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Solution

The fourth proportional to 268,472.20, 402,362.70 and 205,832.20 is: 308,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,472.20 : 402,362.70 = 205,832.20 : x
  2. Step 2: Convert to fraction form
    268,472.20/402,362.70 = 205,832.20/x
  3. Step 3: Cross multiply
    268,472.20x = 402,362.70 × 205,832.20
  4. Step 4: Simplify right side
    268,472.20x = 82,819,199,738.94
  5. Step 5: Solve for x
    x = 82,819,199,738.94/268,472.20
  6. Step 6: Final answer
    x = 308,483.34

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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.