Home / 388,942.13-583,413.20-126,286.13

Finding the Fourth Proportional to 388,942.13, 583,413.20 and 126,286.13

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Solution

The fourth proportional to 388,942.13, 583,413.20 and 126,286.13 is: 189,429.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,942.13 : 583,413.20 = 126,286.13 : x
  2. Step 2: Convert to fraction form
    388,942.13/583,413.20 = 126,286.13/x
  3. Step 3: Cross multiply
    388,942.13x = 583,413.20 × 126,286.13
  4. Step 4: Simplify right side
    388,942.13x = 73,676,991,670.42
  5. Step 5: Solve for x
    x = 73,676,991,670.42/388,942.13
  6. Step 6: Final answer
    x = 189,429.19

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Similar ratio
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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.