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Finding the Fourth Proportional to 262,458.80, 393,689.01 and 72,929.54

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Solution

The fourth proportional to 262,458.80, 393,689.01 and 72,929.54 is: 109,394.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,458.80 : 393,689.01 = 72,929.54 : x
  2. Step 2: Convert to fraction form
    262,458.80/393,689.01 = 72,929.54/x
  3. Step 3: Cross multiply
    262,458.80x = 393,689.01 × 72,929.54
  4. Step 4: Simplify right side
    262,458.80x = 28,711,556,433.91
  5. Step 5: Solve for x
    x = 28,711,556,433.91/262,458.80
  6. Step 6: Final answer
    x = 109,394.53

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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.