Home / 318,822.86-478,297.35-91,120.52

Finding the Fourth Proportional to 318,822.86, 478,297.35 and 91,120.52

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Solution

The fourth proportional to 318,822.86, 478,297.35 and 91,120.52 is: 136,698.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,822.86 : 478,297.35 = 91,120.52 : x
  2. Step 2: Convert to fraction form
    318,822.86/478,297.35 = 91,120.52/x
  3. Step 3: Cross multiply
    318,822.86x = 478,297.35 × 91,120.52
  4. Step 4: Simplify right side
    318,822.86x = 43,582,700,855.14
  5. Step 5: Solve for x
    x = 43,582,700,855.14/318,822.86
  6. Step 6: Final answer
    x = 136,698.80

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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.