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Finding the Fourth Proportional to 354,628.51, 531,643.37 and 164,990.97

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Solution

The fourth proportional to 354,628.51, 531,643.37 and 164,990.97 is: 247,347.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,628.51 : 531,643.37 = 164,990.97 : x
  2. Step 2: Convert to fraction form
    354,628.51/531,643.37 = 164,990.97/x
  3. Step 3: Cross multiply
    354,628.51x = 531,643.37 × 164,990.97
  4. Step 4: Simplify right side
    354,628.51x = 87,716,354,485.41
  5. Step 5: Solve for x
    x = 87,716,354,485.41/354,628.51
  6. Step 6: Final answer
    x = 247,347.16

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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.