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Finding the Fourth Proportional to 439,336.64, 606,413.45 and 255,618.43

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Solution

The fourth proportional to 439,336.64, 606,413.45 and 255,618.43 is: 352,828.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,336.64 : 606,413.45 = 255,618.43 : x
  2. Step 2: Convert to fraction form
    439,336.64/606,413.45 = 255,618.43/x
  3. Step 3: Cross multiply
    439,336.64x = 606,413.45 × 255,618.43
  4. Step 4: Simplify right side
    439,336.64x = 155,010,454,019.88
  5. Step 5: Solve for x
    x = 155,010,454,019.88/439,336.64
  6. Step 6: Final answer
    x = 352,828.42

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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.