Home / 338,857.20-508,358.70-102,223.80

Finding the Fourth Proportional to 338,857.20, 508,358.70 and 102,223.80

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Solution

The fourth proportional to 338,857.20, 508,358.70 and 102,223.80 is: 153,357.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,857.20 : 508,358.70 = 102,223.80 : x
  2. Step 2: Convert to fraction form
    338,857.20/508,358.70 = 102,223.80/x
  3. Step 3: Cross multiply
    338,857.20x = 508,358.70 × 102,223.80
  4. Step 4: Simplify right side
    338,857.20x = 51,966,358,077.06
  5. Step 5: Solve for x
    x = 51,966,358,077.06/338,857.20
  6. Step 6: Final answer
    x = 153,357.69

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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.