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Finding the Fourth Proportional to 354,539.74, 489,267.97 and 193,395.51

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Solution

The fourth proportional to 354,539.74, 489,267.97 and 193,395.51 is: 266,887.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,539.74 : 489,267.97 = 193,395.51 : x
  2. Step 2: Convert to fraction form
    354,539.74/489,267.97 = 193,395.51/x
  3. Step 3: Cross multiply
    354,539.74x = 489,267.97 × 193,395.51
  4. Step 4: Simplify right side
    354,539.74x = 94,622,228,584.81
  5. Step 5: Solve for x
    x = 94,622,228,584.81/354,539.74
  6. Step 6: Final answer
    x = 266,887.51

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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.