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Finding the Fourth Proportional to 573,683.18, 860,136.54 and 321,138.04

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Solution

The fourth proportional to 573,683.18, 860,136.54 and 321,138.04 is: 481,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,683.18 : 860,136.54 = 321,138.04 : x
  2. Step 2: Convert to fraction form
    573,683.18/860,136.54 = 321,138.04/x
  3. Step 3: Cross multiply
    573,683.18x = 860,136.54 × 321,138.04
  4. Step 4: Simplify right side
    573,683.18x = 276,222,562,587.98
  5. Step 5: Solve for x
    x = 276,222,562,587.98/573,683.18
  6. Step 6: Final answer
    x = 481,489.74

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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.