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Finding the Fourth Proportional to 397,427.53, 548,453.99 and 216,143.53

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Solution

The fourth proportional to 397,427.53, 548,453.99 and 216,143.53 is: 298,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,427.53 : 548,453.99 = 216,143.53 : x
  2. Step 2: Convert to fraction form
    397,427.53/548,453.99 = 216,143.53/x
  3. Step 3: Cross multiply
    397,427.53x = 548,453.99 × 216,143.53
  4. Step 4: Simplify right side
    397,427.53x = 118,544,781,441.19
  5. Step 5: Solve for x
    x = 118,544,781,441.19/397,427.53
  6. Step 6: Final answer
    x = 298,280.25

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1.5x scale

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.