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Finding the Fourth Proportional to 289,609.37, 399,671.75 and 162,280.25

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Solution

The fourth proportional to 289,609.37, 399,671.75 and 162,280.25 is: 223,952.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,609.37 : 399,671.75 = 162,280.25 : x
  2. Step 2: Convert to fraction form
    289,609.37/399,671.75 = 162,280.25/x
  3. Step 3: Cross multiply
    289,609.37x = 399,671.75 × 162,280.25
  4. Step 4: Simplify right side
    289,609.37x = 64,858,831,507.94
  5. Step 5: Solve for x
    x = 64,858,831,507.94/289,609.37
  6. Step 6: Final answer
    x = 223,952.81

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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.