Home / 318,867.86-478,369.25-105,623.69

Finding the Fourth Proportional to 318,867.86, 478,369.25 and 105,623.69

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Solution

The fourth proportional to 318,867.86, 478,369.25 and 105,623.69 is: 158,457.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,867.86 : 478,369.25 = 105,623.69 : x
  2. Step 2: Convert to fraction form
    318,867.86/478,369.25 = 105,623.69/x
  3. Step 3: Cross multiply
    318,867.86x = 478,369.25 × 105,623.69
  4. Step 4: Simplify right side
    318,867.86x = 50,527,122,447.57
  5. Step 5: Solve for x
    x = 50,527,122,447.57/318,867.86
  6. Step 6: Final answer
    x = 158,457.87

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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.