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Finding the Fourth Proportional to 172,880.70, 259,321.05 and 162,383.10

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Solution

The fourth proportional to 172,880.70, 259,321.05 and 162,383.10 is: 243,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,880.70 : 259,321.05 = 162,383.10 : x
  2. Step 2: Convert to fraction form
    172,880.70/259,321.05 = 162,383.10/x
  3. Step 3: Cross multiply
    172,880.70x = 259,321.05 × 162,383.10
  4. Step 4: Simplify right side
    172,880.70x = 42,109,355,994.26
  5. Step 5: Solve for x
    x = 42,109,355,994.26/172,880.70
  6. Step 6: Final answer
    x = 243,574.65

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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.