Home / 343,618.92-515,428.38-106,985.52

Finding the Fourth Proportional to 343,618.92, 515,428.38 and 106,985.52

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Solution

The fourth proportional to 343,618.92, 515,428.38 and 106,985.52 is: 160,478.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,618.92 : 515,428.38 = 106,985.52 : x
  2. Step 2: Convert to fraction form
    343,618.92/515,428.38 = 106,985.52/x
  3. Step 3: Cross multiply
    343,618.92x = 515,428.38 × 106,985.52
  4. Step 4: Simplify right side
    343,618.92x = 55,143,373,257.06
  5. Step 5: Solve for x
    x = 55,143,373,257.06/343,618.92
  6. Step 6: Final answer
    x = 160,478.28

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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.