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Finding the Fourth Proportional to 206,413.61, 309,607.32 and 73,276.34

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Solution

The fourth proportional to 206,413.61, 309,607.32 and 73,276.34 is: 109,909.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,413.61 : 309,607.32 = 73,276.34 : x
  2. Step 2: Convert to fraction form
    206,413.61/309,607.32 = 73,276.34/x
  3. Step 3: Cross multiply
    206,413.61x = 309,607.32 × 73,276.34
  4. Step 4: Simplify right side
    206,413.61x = 22,686,891,246.81
  5. Step 5: Solve for x
    x = 22,686,891,246.81/206,413.61
  6. Step 6: Final answer
    x = 109,909.86

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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.