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Finding the Fourth Proportional to 394,989.72, 592,481.76 and 158,328.96

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Solution

The fourth proportional to 394,989.72, 592,481.76 and 158,328.96 is: 237,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,989.72 : 592,481.76 = 158,328.96 : x
  2. Step 2: Convert to fraction form
    394,989.72/592,481.76 = 158,328.96/x
  3. Step 3: Cross multiply
    394,989.72x = 592,481.76 × 158,328.96
  4. Step 4: Simplify right side
    394,989.72x = 93,807,020,879.77
  5. Step 5: Solve for x
    x = 93,807,020,879.77/394,989.72
  6. Step 6: Final answer
    x = 237,492.31

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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.