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Finding the Fourth Proportional to 438,762.21, 658,143.27 and 106,338.21

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Solution

The fourth proportional to 438,762.21, 658,143.27 and 106,338.21 is: 159,507.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,762.21 : 658,143.27 = 106,338.21 : x
  2. Step 2: Convert to fraction form
    438,762.21/658,143.27 = 106,338.21/x
  3. Step 3: Cross multiply
    438,762.21x = 658,143.27 × 106,338.21
  4. Step 4: Simplify right side
    438,762.21x = 69,985,777,255.35
  5. Step 5: Solve for x
    x = 69,985,777,255.35/438,762.21
  6. Step 6: Final answer
    x = 159,507.30

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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.