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Finding the Fourth Proportional to 617,131.54, 925,364.43 and 279,988.21

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Solution

The fourth proportional to 617,131.54, 925,364.43 and 279,988.21 is: 419,831.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,131.54 : 925,364.43 = 279,988.21 : x
  2. Step 2: Convert to fraction form
    617,131.54/925,364.43 = 279,988.21/x
  3. Step 3: Cross multiply
    617,131.54x = 925,364.43 × 279,988.21
  4. Step 4: Simplify right side
    617,131.54x = 259,091,130,353.37
  5. Step 5: Solve for x
    x = 259,091,130,353.37/617,131.54
  6. Step 6: Final answer
    x = 419,831.29

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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.