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Finding the Fourth Proportional to 254,700.64, 351,469.62 and 139,987.36

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Solution

The fourth proportional to 254,700.64, 351,469.62 and 139,987.36 is: 193,173.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,700.64 : 351,469.62 = 139,987.36 : x
  2. Step 2: Convert to fraction form
    254,700.64/351,469.62 = 139,987.36/x
  3. Step 3: Cross multiply
    254,700.64x = 351,469.62 × 139,987.36
  4. Step 4: Simplify right side
    254,700.64x = 49,201,304,224.00
  5. Step 5: Solve for x
    x = 49,201,304,224.00/254,700.64
  6. Step 6: Final answer
    x = 193,173.07

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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.