Home / 319,405.20-479,107.80-179,145.60

Finding the Fourth Proportional to 319,405.20, 479,107.80 and 179,145.60

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Solution

The fourth proportional to 319,405.20, 479,107.80 and 179,145.60 is: 268,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,405.20 : 479,107.80 = 179,145.60 : x
  2. Step 2: Convert to fraction form
    319,405.20/479,107.80 = 179,145.60/x
  3. Step 3: Cross multiply
    319,405.20x = 479,107.80 × 179,145.60
  4. Step 4: Simplify right side
    319,405.20x = 85,830,054,295.68
  5. Step 5: Solve for x
    x = 85,830,054,295.68/319,405.20
  6. Step 6: Final answer
    x = 268,718.40

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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.