Home / 318,864.23-478,323.87-82,204.91

Finding the Fourth Proportional to 318,864.23, 478,323.87 and 82,204.91

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Solution

The fourth proportional to 318,864.23, 478,323.87 and 82,204.91 is: 123,314.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,864.23 : 478,323.87 = 82,204.91 : x
  2. Step 2: Convert to fraction form
    318,864.23/478,323.87 = 82,204.91/x
  3. Step 3: Cross multiply
    318,864.23x = 478,323.87 × 82,204.91
  4. Step 4: Simplify right side
    318,864.23x = 39,320,568,292.58
  5. Step 5: Solve for x
    x = 39,320,568,292.58/318,864.23
  6. Step 6: Final answer
    x = 123,314.46

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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.