Home / 397,428.42-548,445.94-216,136.45

Finding the Fourth Proportional to 397,428.42, 548,445.94 and 216,136.45

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Solution

The fourth proportional to 397,428.42, 548,445.94 and 216,136.45 is: 298,265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,428.42 : 548,445.94 = 216,136.45 : x
  2. Step 2: Convert to fraction form
    397,428.42/548,445.94 = 216,136.45/x
  3. Step 3: Cross multiply
    397,428.42x = 548,445.94 × 216,136.45
  4. Step 4: Simplify right side
    397,428.42x = 118,539,158,633.73
  5. Step 5: Solve for x
    x = 118,539,158,633.73/397,428.42
  6. Step 6: Final answer
    x = 298,265.43

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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.