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Finding the Fourth Proportional to 296,967, 445,238.88 and 139,109.34

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Solution

The fourth proportional to 296,967, 445,238.88 and 139,109.34 is: 208,564.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,967 : 445,238.88 = 139,109.34 : x
  2. Step 2: Convert to fraction form
    296,967/445,238.88 = 139,109.34/x
  3. Step 3: Cross multiply
    296,967x = 445,238.88 × 139,109.34
  4. Step 4: Simplify right side
    296,967x = 61,936,886,739.14
  5. Step 5: Solve for x
    x = 61,936,886,739.14/296,967
  6. Step 6: Final answer
    x = 208,564.88

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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.