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Finding the Fourth Proportional to 309,663.70, 426,842.04 and 233,067.64

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Solution

The fourth proportional to 309,663.70, 426,842.04 and 233,067.64 is: 321,261.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,663.70 : 426,842.04 = 233,067.64 : x
  2. Step 2: Convert to fraction form
    309,663.70/426,842.04 = 233,067.64/x
  3. Step 3: Cross multiply
    309,663.70x = 426,842.04 × 233,067.64
  4. Step 4: Simplify right side
    309,663.70x = 99,483,066,915.59
  5. Step 5: Solve for x
    x = 99,483,066,915.59/309,663.70
  6. Step 6: Final answer
    x = 321,261.64

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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.