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Finding the Fourth Proportional to 251,613, 347,225.94 and 138,433.32

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Solution

The fourth proportional to 251,613, 347,225.94 and 138,433.32 is: 191,037.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,613 : 347,225.94 = 138,433.32 : x
  2. Step 2: Convert to fraction form
    251,613/347,225.94 = 138,433.32/x
  3. Step 3: Cross multiply
    251,613x = 347,225.94 × 138,433.32
  4. Step 4: Simplify right side
    251,613x = 48,067,639,664.32
  5. Step 5: Solve for x
    x = 48,067,639,664.32/251,613
  6. Step 6: Final answer
    x = 191,037.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.