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Finding the Fourth Proportional to 203,510.15, 305,192.32 and 103,637.15

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Solution

The fourth proportional to 203,510.15, 305,192.32 and 103,637.15 is: 155,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,510.15 : 305,192.32 = 103,637.15 : x
  2. Step 2: Convert to fraction form
    203,510.15/305,192.32 = 103,637.15/x
  3. Step 3: Cross multiply
    203,510.15x = 305,192.32 × 103,637.15
  4. Step 4: Simplify right side
    203,510.15x = 31,629,262,246.69
  5. Step 5: Solve for x
    x = 31,629,262,246.69/203,510.15
  6. Step 6: Final answer
    x = 155,418.60

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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.