Home / 388,923-583,482.92-108,440.25

Finding the Fourth Proportional to 388,923, 583,482.92 and 108,440.25

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Solution

The fourth proportional to 388,923, 583,482.92 and 108,440.25 is: 162,687.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,923 : 583,482.92 = 108,440.25 : x
  2. Step 2: Convert to fraction form
    388,923/583,482.92 = 108,440.25/x
  3. Step 3: Cross multiply
    388,923x = 583,482.92 × 108,440.25
  4. Step 4: Simplify right side
    388,923x = 63,273,033,173.33
  5. Step 5: Solve for x
    x = 63,273,033,173.33/388,923
  6. Step 6: Final answer
    x = 162,687.82

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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.