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Finding the Fourth Proportional to 251,907.33, 347,619.28 and 138,708.21

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Solution

The fourth proportional to 251,907.33, 347,619.28 and 138,708.21 is: 191,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,907.33 : 347,619.28 = 138,708.21 : x
  2. Step 2: Convert to fraction form
    251,907.33/347,619.28 = 138,708.21/x
  3. Step 3: Cross multiply
    251,907.33x = 347,619.28 × 138,708.21
  4. Step 4: Simplify right side
    251,907.33x = 48,217,648,090.29
  5. Step 5: Solve for x
    x = 48,217,648,090.29/251,907.33
  6. Step 6: Final answer
    x = 191,410.26

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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.