Home / 345,868.23-515,364.05-308,138.37

Finding the Fourth Proportional to 345,868.23, 515,364.05 and 308,138.37

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Solution

The fourth proportional to 345,868.23, 515,364.05 and 308,138.37 is: 459,144.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,868.23 : 515,364.05 = 308,138.37 : x
  2. Step 2: Convert to fraction form
    345,868.23/515,364.05 = 308,138.37/x
  3. Step 3: Cross multiply
    345,868.23x = 515,364.05 × 308,138.37
  4. Step 4: Simplify right side
    345,868.23x = 158,803,436,782.91
  5. Step 5: Solve for x
    x = 158,803,436,782.91/345,868.23
  6. Step 6: Final answer
    x = 459,144.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.