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Finding the Fourth Proportional to 391,596.37, 587,395.01 and 107,289.38

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Solution

The fourth proportional to 391,596.37, 587,395.01 and 107,289.38 is: 160,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,596.37 : 587,395.01 = 107,289.38 : x
  2. Step 2: Convert to fraction form
    391,596.37/587,395.01 = 107,289.38/x
  3. Step 3: Cross multiply
    391,596.37x = 587,395.01 × 107,289.38
  4. Step 4: Simplify right side
    391,596.37x = 63,021,247,571.20
  5. Step 5: Solve for x
    x = 63,021,247,571.20/391,596.37
  6. Step 6: Final answer
    x = 160,934.20

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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.