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Finding the Fourth Proportional to 487,097.56, 672,136.32 and 269,276.80

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Solution

The fourth proportional to 487,097.56, 672,136.32 and 269,276.80 is: 371,569.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,097.56 : 672,136.32 = 269,276.80 : x
  2. Step 2: Convert to fraction form
    487,097.56/672,136.32 = 269,276.80/x
  3. Step 3: Cross multiply
    487,097.56x = 672,136.32 × 269,276.80
  4. Step 4: Simplify right side
    487,097.56x = 180,990,717,413.38
  5. Step 5: Solve for x
    x = 180,990,717,413.38/487,097.56
  6. Step 6: Final answer
    x = 371,569.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.