Home / 318,822.36-478,296.60-91,120.02

Finding the Fourth Proportional to 318,822.36, 478,296.60 and 91,120.02

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Solution

The fourth proportional to 318,822.36, 478,296.60 and 91,120.02 is: 136,698.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,822.36 : 478,296.60 = 91,120.02 : x
  2. Step 2: Convert to fraction form
    318,822.36/478,296.60 = 91,120.02/x
  3. Step 3: Cross multiply
    318,822.36x = 478,296.60 × 91,120.02
  4. Step 4: Simplify right side
    318,822.36x = 43,582,395,757.93
  5. Step 5: Solve for x
    x = 43,582,395,757.93/318,822.36
  6. Step 6: Final answer
    x = 136,698.05

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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.