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Finding the Fourth Proportional to 439,921, 607,092.60 and 238,717

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Solution

The fourth proportional to 439,921, 607,092.60 and 238,717 is: 329,430.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,921 : 607,092.60 = 238,717 : x
  2. Step 2: Convert to fraction form
    439,921/607,092.60 = 238,717/x
  3. Step 3: Cross multiply
    439,921x = 607,092.60 × 238,717
  4. Step 4: Simplify right side
    439,921x = 144,923,324,194.20
  5. Step 5: Solve for x
    x = 144,923,324,194.20/439,921
  6. Step 6: Final answer
    x = 329,430.34

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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.