Home / 314,942.20-472,413.30-128,087.80

Finding the Fourth Proportional to 314,942.20, 472,413.30 and 128,087.80

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Solution

The fourth proportional to 314,942.20, 472,413.30 and 128,087.80 is: 192,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,942.20 : 472,413.30 = 128,087.80 : x
  2. Step 2: Convert to fraction form
    314,942.20/472,413.30 = 128,087.80/x
  3. Step 3: Cross multiply
    314,942.20x = 472,413.30 × 128,087.80
  4. Step 4: Simplify right side
    314,942.20x = 60,510,380,287.74
  5. Step 5: Solve for x
    x = 60,510,380,287.74/314,942.20
  6. Step 6: Final answer
    x = 192,131.70

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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.