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Finding the Fourth Proportional to 313,987.26, 432,845.19 and 238,404.54

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Solution

The fourth proportional to 313,987.26, 432,845.19 and 238,404.54 is: 328,651.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,987.26 : 432,845.19 = 238,404.54 : x
  2. Step 2: Convert to fraction form
    313,987.26/432,845.19 = 238,404.54/x
  3. Step 3: Cross multiply
    313,987.26x = 432,845.19 × 238,404.54
  4. Step 4: Simplify right side
    313,987.26x = 103,192,258,413.16
  5. Step 5: Solve for x
    x = 103,192,258,413.16/313,987.26
  6. Step 6: Final answer
    x = 328,651.10

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1.5x scale

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.