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Finding the Fourth Proportional to 296,969, 445,241.88 and 139,111.36

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Solution

The fourth proportional to 296,969, 445,241.88 and 139,111.36 is: 208,567.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,969 : 445,241.88 = 139,111.36 : x
  2. Step 2: Convert to fraction form
    296,969/445,241.88 = 139,111.36/x
  3. Step 3: Cross multiply
    296,969x = 445,241.88 × 139,111.36
  4. Step 4: Simplify right side
    296,969x = 61,938,203,455.76
  5. Step 5: Solve for x
    x = 61,938,203,455.76/296,969
  6. Step 6: Final answer
    x = 208,567.91

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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.