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Finding the Fourth Proportional to 254,535.40, 351,268.41 and 139,823.47

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Solution

The fourth proportional to 254,535.40, 351,268.41 and 139,823.47 is: 192,961.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,535.40 : 351,268.41 = 139,823.47 : x
  2. Step 2: Convert to fraction form
    254,535.40/351,268.41 = 139,823.47/x
  3. Step 3: Cross multiply
    254,535.40x = 351,268.41 × 139,823.47
  4. Step 4: Simplify right side
    254,535.40x = 49,115,567,987.58
  5. Step 5: Solve for x
    x = 49,115,567,987.58/254,535.40
  6. Step 6: Final answer
    x = 192,961.64

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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.