Home / 319,132.20-478,115.10-259,645.80

Finding the Fourth Proportional to 319,132.20, 478,115.10 and 259,645.80

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Solution

The fourth proportional to 319,132.20, 478,115.10 and 259,645.80 is: 388,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,132.20 : 478,115.10 = 259,645.80 : x
  2. Step 2: Convert to fraction form
    319,132.20/478,115.10 = 259,645.80/x
  3. Step 3: Cross multiply
    319,132.20x = 478,115.10 × 259,645.80
  4. Step 4: Simplify right side
    319,132.20x = 124,140,577,631.58
  5. Step 5: Solve for x
    x = 124,140,577,631.58/319,132.20
  6. Step 6: Final answer
    x = 388,994.21

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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.