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Finding the Fourth Proportional to 310,831.56, 428,907.22 and 174,860.92

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Solution

The fourth proportional to 310,831.56, 428,907.22 and 174,860.92 is: 241,285.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,831.56 : 428,907.22 = 174,860.92 : x
  2. Step 2: Convert to fraction form
    310,831.56/428,907.22 = 174,860.92/x
  3. Step 3: Cross multiply
    310,831.56x = 428,907.22 × 174,860.92
  4. Step 4: Simplify right side
    310,831.56x = 74,999,111,083.84
  5. Step 5: Solve for x
    x = 74,999,111,083.84/310,831.56
  6. Step 6: Final answer
    x = 241,285.38

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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.