Home / 318,995.04-478,566.63-108,634.80

Finding the Fourth Proportional to 318,995.04, 478,566.63 and 108,634.80

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Solution

The fourth proportional to 318,995.04, 478,566.63 and 108,634.80 is: 162,977.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,995.04 : 478,566.63 = 108,634.80 : x
  2. Step 2: Convert to fraction form
    318,995.04/478,566.63 = 108,634.80/x
  3. Step 3: Cross multiply
    318,995.04x = 478,566.63 × 108,634.80
  4. Step 4: Simplify right side
    318,995.04x = 51,988,990,136.72
  5. Step 5: Solve for x
    x = 51,988,990,136.72/318,995.04
  6. Step 6: Final answer
    x = 162,977.42

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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.