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Finding the Fourth Proportional to 451,268.80, 677,162.40 and 170,987.20

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Solution

The fourth proportional to 451,268.80, 677,162.40 and 170,987.20 is: 256,579.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,268.80 : 677,162.40 = 170,987.20 : x
  2. Step 2: Convert to fraction form
    451,268.80/677,162.40 = 170,987.20/x
  3. Step 3: Cross multiply
    451,268.80x = 677,162.40 × 170,987.20
  4. Step 4: Simplify right side
    451,268.80x = 115,786,102,721.28
  5. Step 5: Solve for x
    x = 115,786,102,721.28/451,268.80
  6. Step 6: Final answer
    x = 256,579.01

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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.