Home / 306,985.85-420,572.15-295,480.39

Finding the Fourth Proportional to 306,985.85, 420,572.15 and 295,480.39

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Solution

The fourth proportional to 306,985.85, 420,572.15 and 295,480.39 is: 404,809.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,985.85 : 420,572.15 = 295,480.39 : x
  2. Step 2: Convert to fraction form
    306,985.85/420,572.15 = 295,480.39/x
  3. Step 3: Cross multiply
    306,985.85x = 420,572.15 × 295,480.39
  4. Step 4: Simplify right side
    306,985.85x = 124,270,822,905.14
  5. Step 5: Solve for x
    x = 124,270,822,905.14/306,985.85
  6. Step 6: Final answer
    x = 404,809.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.