Home / 345,870.23-515,367.03-308,140.37

Finding the Fourth Proportional to 345,870.23, 515,367.03 and 308,140.37

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Solution

The fourth proportional to 345,870.23, 515,367.03 and 308,140.37 is: 459,147.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,870.23 : 515,367.03 = 308,140.37 : x
  2. Step 2: Convert to fraction form
    345,870.23/515,367.03 = 308,140.37/x
  3. Step 3: Cross multiply
    345,870.23x = 515,367.03 × 308,140.37
  4. Step 4: Simplify right side
    345,870.23x = 158,805,387,310.00
  5. Step 5: Solve for x
    x = 158,805,387,310.00/345,870.23
  6. Step 6: Final answer
    x = 459,147.31

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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.