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Finding the Fourth Proportional to 264,430.50, 396,645.75 and 67,438.50

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Solution

The fourth proportional to 264,430.50, 396,645.75 and 67,438.50 is: 101,157.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,430.50 : 396,645.75 = 67,438.50 : x
  2. Step 2: Convert to fraction form
    264,430.50/396,645.75 = 67,438.50/x
  3. Step 3: Cross multiply
    264,430.50x = 396,645.75 × 67,438.50
  4. Step 4: Simplify right side
    264,430.50x = 26,749,194,411.38
  5. Step 5: Solve for x
    x = 26,749,194,411.38/264,430.50
  6. Step 6: Final answer
    x = 101,157.75

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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.