Home / 318,926.41-478,377.66-79,041.10

Finding the Fourth Proportional to 318,926.41, 478,377.66 and 79,041.10

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Solution

The fourth proportional to 318,926.41, 478,377.66 and 79,041.10 is: 118,558.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,926.41 : 478,377.66 = 79,041.10 : x
  2. Step 2: Convert to fraction form
    318,926.41/478,377.66 = 79,041.10/x
  3. Step 3: Cross multiply
    318,926.41x = 478,377.66 × 79,041.10
  4. Step 4: Simplify right side
    318,926.41x = 37,811,498,143.95
  5. Step 5: Solve for x
    x = 37,811,498,143.95/318,926.41
  6. Step 6: Final answer
    x = 118,558.69

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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.