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Finding the Fourth Proportional to 262,369.23, 393,581.96 and 72,830.39

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Solution

The fourth proportional to 262,369.23, 393,581.96 and 72,830.39 is: 109,253.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,369.23 : 393,581.96 = 72,830.39 : x
  2. Step 2: Convert to fraction form
    262,369.23/393,581.96 = 72,830.39/x
  3. Step 3: Cross multiply
    262,369.23x = 393,581.96 × 72,830.39
  4. Step 4: Simplify right side
    262,369.23x = 28,664,728,809.80
  5. Step 5: Solve for x
    x = 28,664,728,809.80/262,369.23
  6. Step 6: Final answer
    x = 109,253.39

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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.