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Finding the Fourth Proportional to 309,314.36, 426,833.62 and 181,965.36

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Solution

The fourth proportional to 309,314.36, 426,833.62 and 181,965.36 is: 251,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,314.36 : 426,833.62 = 181,965.36 : x
  2. Step 2: Convert to fraction form
    309,314.36/426,833.62 = 181,965.36/x
  3. Step 3: Cross multiply
    309,314.36x = 426,833.62 × 181,965.36
  4. Step 4: Simplify right side
    309,314.36x = 77,668,933,323.40
  5. Step 5: Solve for x
    x = 77,668,933,323.40/309,314.36
  6. Step 6: Final answer
    x = 251,100.32

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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.