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Finding the Fourth Proportional to 439,898.80, 607,067.42 and 238,694.80

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Solution

The fourth proportional to 439,898.80, 607,067.42 and 238,694.80 is: 329,402.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,898.80 : 607,067.42 = 238,694.80 : x
  2. Step 2: Convert to fraction form
    439,898.80/607,067.42 = 238,694.80/x
  3. Step 3: Cross multiply
    439,898.80x = 607,067.42 × 238,694.80
  4. Step 4: Simplify right side
    439,898.80x = 144,903,836,403.42
  5. Step 5: Solve for x
    x = 144,903,836,403.42/439,898.80
  6. Step 6: Final answer
    x = 329,402.66

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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.