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Finding the Fourth Proportional to 339,131.64, 508,935.60 and 139,633.50

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Solution

The fourth proportional to 339,131.64, 508,935.60 and 139,633.50 is: 209,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,131.64 : 508,935.60 = 139,633.50 : x
  2. Step 2: Convert to fraction form
    339,131.64/508,935.60 = 139,633.50/x
  3. Step 3: Cross multiply
    339,131.64x = 508,935.60 × 139,633.50
  4. Step 4: Simplify right side
    339,131.64x = 71,064,459,102.60
  5. Step 5: Solve for x
    x = 71,064,459,102.60/339,131.64
  6. Step 6: Final answer
    x = 209,548.30

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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.