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Finding the Fourth Proportional to 262,459.80, 393,690.51 and 72,930.54

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Solution

The fourth proportional to 262,459.80, 393,690.51 and 72,930.54 is: 109,396.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,459.80 : 393,690.51 = 72,930.54 : x
  2. Step 2: Convert to fraction form
    262,459.80/393,690.51 = 72,930.54/x
  3. Step 3: Cross multiply
    262,459.80x = 393,690.51 × 72,930.54
  4. Step 4: Simplify right side
    262,459.80x = 28,712,061,487.18
  5. Step 5: Solve for x
    x = 28,712,061,487.18/262,459.80
  6. Step 6: Final answer
    x = 109,396.04

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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.