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Finding the Fourth Proportional to 287,087.63, 430,486.65 and 167,183.33

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Solution

The fourth proportional to 287,087.63, 430,486.65 and 167,183.33 is: 250,690.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,087.63 : 430,486.65 = 167,183.33 : x
  2. Step 2: Convert to fraction form
    287,087.63/430,486.65 = 167,183.33/x
  3. Step 3: Cross multiply
    287,087.63x = 430,486.65 × 167,183.33
  4. Step 4: Simplify right side
    287,087.63x = 71,970,189,515.11
  5. Step 5: Solve for x
    x = 71,970,189,515.11/287,087.63
  6. Step 6: Final answer
    x = 250,690.67

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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.