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Finding the Fourth Proportional to 262,488.66, 393,413.11 and 136,059.20

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Solution

The fourth proportional to 262,488.66, 393,413.11 and 136,059.20 is: 203,922.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,488.66 : 393,413.11 = 136,059.20 : x
  2. Step 2: Convert to fraction form
    262,488.66/393,413.11 = 136,059.20/x
  3. Step 3: Cross multiply
    262,488.66x = 393,413.11 × 136,059.20
  4. Step 4: Simplify right side
    262,488.66x = 53,527,473,016.11
  5. Step 5: Solve for x
    x = 53,527,473,016.11/262,488.66
  6. Step 6: Final answer
    x = 203,922.99

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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.