Home / 343,628.16-515,516.26-103,721.96

Finding the Fourth Proportional to 343,628.16, 515,516.26 and 103,721.96

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Solution

The fourth proportional to 343,628.16, 515,516.26 and 103,721.96 is: 155,605.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,628.16 : 515,516.26 = 103,721.96 : x
  2. Step 2: Convert to fraction form
    343,628.16/515,516.26 = 103,721.96/x
  3. Step 3: Cross multiply
    343,628.16x = 515,516.26 × 103,721.96
  4. Step 4: Simplify right side
    343,628.16x = 53,470,356,899.07
  5. Step 5: Solve for x
    x = 53,470,356,899.07/343,628.16
  6. Step 6: Final answer
    x = 155,605.28

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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.