Home / 209,022.03-313,640.28-102,403.98

Finding the Fourth Proportional to 209,022.03, 313,640.28 and 102,403.98

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Solution

The fourth proportional to 209,022.03, 313,640.28 and 102,403.98 is: 153,658.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,022.03 : 313,640.28 = 102,403.98 : x
  2. Step 2: Convert to fraction form
    209,022.03/313,640.28 = 102,403.98/x
  3. Step 3: Cross multiply
    209,022.03x = 313,640.28 × 102,403.98
  4. Step 4: Simplify right side
    209,022.03x = 32,118,012,960.31
  5. Step 5: Solve for x
    x = 32,118,012,960.31/209,022.03
  6. Step 6: Final answer
    x = 153,658.51

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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.