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Finding the Fourth Proportional to 253,907.80, 380,958.90 and 249,922.60

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Solution

The fourth proportional to 253,907.80, 380,958.90 and 249,922.60 is: 374,979.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,907.80 : 380,958.90 = 249,922.60 : x
  2. Step 2: Convert to fraction form
    253,907.80/380,958.90 = 249,922.60/x
  3. Step 3: Cross multiply
    253,907.80x = 380,958.90 × 249,922.60
  4. Step 4: Simplify right side
    253,907.80x = 95,210,238,781.14
  5. Step 5: Solve for x
    x = 95,210,238,781.14/253,907.80
  6. Step 6: Final answer
    x = 374,979.57

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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.