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Finding the Fourth Proportional to 250,419.94, 375,664.99 and 81,953.51

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Solution

The fourth proportional to 250,419.94, 375,664.99 and 81,953.51 is: 122,941.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,419.94 : 375,664.99 = 81,953.51 : x
  2. Step 2: Convert to fraction form
    250,419.94/375,664.99 = 81,953.51/x
  3. Step 3: Cross multiply
    250,419.94x = 375,664.99 × 81,953.51
  4. Step 4: Simplify right side
    250,419.94x = 30,787,062,636.29
  5. Step 5: Solve for x
    x = 30,787,062,636.29/250,419.94
  6. Step 6: Final answer
    x = 122,941.74

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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.