Home / 312,629.58-431,428.23-169,393.50

Finding the Fourth Proportional to 312,629.58, 431,428.23 and 169,393.50

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Solution

The fourth proportional to 312,629.58, 431,428.23 and 169,393.50 is: 233,762.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,629.58 : 431,428.23 = 169,393.50 : x
  2. Step 2: Convert to fraction form
    312,629.58/431,428.23 = 169,393.50/x
  3. Step 3: Cross multiply
    312,629.58x = 431,428.23 × 169,393.50
  4. Step 4: Simplify right side
    312,629.58x = 73,081,137,878.51
  5. Step 5: Solve for x
    x = 73,081,137,878.51/312,629.58
  6. Step 6: Final answer
    x = 233,762.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.