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Finding the Fourth Proportional to 394,573.20, 591,859.80 and 158,085.60

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Solution

The fourth proportional to 394,573.20, 591,859.80 and 158,085.60 is: 237,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,573.20 : 591,859.80 = 158,085.60 : x
  2. Step 2: Convert to fraction form
    394,573.20/591,859.80 = 158,085.60/x
  3. Step 3: Cross multiply
    394,573.20x = 591,859.80 × 158,085.60
  4. Step 4: Simplify right side
    394,573.20x = 93,564,511,598.88
  5. Step 5: Solve for x
    x = 93,564,511,598.88/394,573.20
  6. Step 6: Final answer
    x = 237,128.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.