Home / 318,867.84-478,369.24-105,623.69

Finding the Fourth Proportional to 318,867.84, 478,369.24 and 105,623.69

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Solution

The fourth proportional to 318,867.84, 478,369.24 and 105,623.69 is: 158,457.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,867.84 : 478,369.24 = 105,623.69 : x
  2. Step 2: Convert to fraction form
    318,867.84/478,369.24 = 105,623.69/x
  3. Step 3: Cross multiply
    318,867.84x = 478,369.24 × 105,623.69
  4. Step 4: Simplify right side
    318,867.84x = 50,527,121,655.39
  5. Step 5: Solve for x
    x = 50,527,121,655.39/318,867.84
  6. Step 6: Final answer
    x = 158,457.88

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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.