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Finding the Fourth Proportional to 411,764.20, 617,675.10 and 162,413.80

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Solution

The fourth proportional to 411,764.20, 617,675.10 and 162,413.80 is: 243,632.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,764.20 : 617,675.10 = 162,413.80 : x
  2. Step 2: Convert to fraction form
    411,764.20/617,675.10 = 162,413.80/x
  3. Step 3: Cross multiply
    411,764.20x = 617,675.10 × 162,413.80
  4. Step 4: Simplify right side
    411,764.20x = 100,318,960,156.38
  5. Step 5: Solve for x
    x = 100,318,960,156.38/411,764.20
  6. Step 6: Final answer
    x = 243,632.06

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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.