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Finding the Fourth Proportional to 251,907.73, 347,627.46 and 137,188.38

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Solution

The fourth proportional to 251,907.73, 347,627.46 and 137,188.38 is: 189,317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,907.73 : 347,627.46 = 137,188.38 : x
  2. Step 2: Convert to fraction form
    251,907.73/347,627.46 = 137,188.38/x
  3. Step 3: Cross multiply
    251,907.73x = 347,627.46 × 137,188.38
  4. Step 4: Simplify right side
    251,907.73x = 47,690,448,080.91
  5. Step 5: Solve for x
    x = 47,690,448,080.91/251,907.73
  6. Step 6: Final answer
    x = 189,317.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.