Home / 343,583.10-515,763.45-203,420.70

Finding the Fourth Proportional to 343,583.10, 515,763.45 and 203,420.70

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Solution

The fourth proportional to 343,583.10, 515,763.45 and 203,420.70 is: 305,361.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,583.10 : 515,763.45 = 203,420.70 : x
  2. Step 2: Convert to fraction form
    343,583.10/515,763.45 = 203,420.70/x
  3. Step 3: Cross multiply
    343,583.10x = 515,763.45 × 203,420.70
  4. Step 4: Simplify right side
    343,583.10x = 104,916,962,033.42
  5. Step 5: Solve for x
    x = 104,916,962,033.42/343,583.10
  6. Step 6: Final answer
    x = 305,361.24

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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.