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Finding the Fourth Proportional to 439,893, 607,052.34 and 238,689

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Solution

The fourth proportional to 439,893, 607,052.34 and 238,689 is: 329,390.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,893 : 607,052.34 = 238,689 : x
  2. Step 2: Convert to fraction form
    439,893/607,052.34 = 238,689/x
  3. Step 3: Cross multiply
    439,893x = 607,052.34 × 238,689
  4. Step 4: Simplify right side
    439,893x = 144,896,715,982.26
  5. Step 5: Solve for x
    x = 144,896,715,982.26/439,893
  6. Step 6: Final answer
    x = 329,390.82

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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.