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Finding the Fourth Proportional to 486,259.51, 728,890.44 and 186,659.41

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Solution

The fourth proportional to 486,259.51, 728,890.44 and 186,659.41 is: 279,797.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,259.51 : 728,890.44 = 186,659.41 : x
  2. Step 2: Convert to fraction form
    486,259.51/728,890.44 = 186,659.41/x
  3. Step 3: Cross multiply
    486,259.51x = 728,890.44 × 186,659.41
  4. Step 4: Simplify right side
    486,259.51x = 136,054,259,485.04
  5. Step 5: Solve for x
    x = 136,054,259,485.04/486,259.51
  6. Step 6: Final answer
    x = 279,797.63

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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.