Home / 338,942.45-508,416.60-86,223.20

Finding the Fourth Proportional to 338,942.45, 508,416.60 and 86,223.20

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Solution

The fourth proportional to 338,942.45, 508,416.60 and 86,223.20 is: 129,335.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,942.45 : 508,416.60 = 86,223.20 : x
  2. Step 2: Convert to fraction form
    338,942.45/508,416.60 = 86,223.20/x
  3. Step 3: Cross multiply
    338,942.45x = 508,416.60 × 86,223.20
  4. Step 4: Simplify right side
    338,942.45x = 43,837,303,966.37
  5. Step 5: Solve for x
    x = 43,837,303,966.37/338,942.45
  6. Step 6: Final answer
    x = 129,335.54

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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.