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Finding the Fourth Proportional to 425,479.86, 637,993.98 and 125,919.18

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Solution

The fourth proportional to 425,479.86, 637,993.98 and 125,919.18 is: 188,811.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,479.86 : 637,993.98 = 125,919.18 : x
  2. Step 2: Convert to fraction form
    425,479.86/637,993.98 = 125,919.18/x
  3. Step 3: Cross multiply
    425,479.86x = 637,993.98 × 125,919.18
  4. Step 4: Simplify right side
    425,479.86x = 80,335,678,806.54
  5. Step 5: Solve for x
    x = 80,335,678,806.54/425,479.86
  6. Step 6: Final answer
    x = 188,811.94

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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.