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Finding the Fourth Proportional to 249,958.62, 374,976.81 and 81,439.74

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Solution

The fourth proportional to 249,958.62, 374,976.81 and 81,439.74 is: 122,172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,958.62 : 374,976.81 = 81,439.74 : x
  2. Step 2: Convert to fraction form
    249,958.62/374,976.81 = 81,439.74/x
  3. Step 3: Cross multiply
    249,958.62x = 374,976.81 × 81,439.74
  4. Step 4: Simplify right side
    249,958.62x = 30,538,013,912.43
  5. Step 5: Solve for x
    x = 30,538,013,912.43/249,958.62
  6. Step 6: Final answer
    x = 122,172.28

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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.