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Finding the Fourth Proportional to 439,317.47, 658,041.78 and 259,208.80

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Solution

The fourth proportional to 439,317.47, 658,041.78 and 259,208.80 is: 388,261.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,317.47 : 658,041.78 = 259,208.80 : x
  2. Step 2: Convert to fraction form
    439,317.47/658,041.78 = 259,208.80/x
  3. Step 3: Cross multiply
    439,317.47x = 658,041.78 × 259,208.80
  4. Step 4: Simplify right side
    439,317.47x = 170,570,220,143.66
  5. Step 5: Solve for x
    x = 170,570,220,143.66/439,317.47
  6. Step 6: Final answer
    x = 388,261.86

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1.5x scale

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.