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Finding the Fourth Proportional to 253,921.80, 380,979.90 and 249,936.60

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Solution

The fourth proportional to 253,921.80, 380,979.90 and 249,936.60 is: 375,000.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,921.80 : 380,979.90 = 249,936.60 : x
  2. Step 2: Convert to fraction form
    253,921.80/380,979.90 = 249,936.60/x
  3. Step 3: Cross multiply
    253,921.80x = 380,979.90 × 249,936.60
  4. Step 4: Simplify right side
    253,921.80x = 95,220,820,874.34
  5. Step 5: Solve for x
    x = 95,220,820,874.34/253,921.80
  6. Step 6: Final answer
    x = 375,000.57

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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.