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Finding the Fourth Proportional to 296,963, 445,232.88 and 139,105.34

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Solution

The fourth proportional to 296,963, 445,232.88 and 139,105.34 is: 208,558.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,963 : 445,232.88 = 139,105.34 : x
  2. Step 2: Convert to fraction form
    296,963/445,232.88 = 139,105.34/x
  3. Step 3: Cross multiply
    296,963x = 445,232.88 × 139,105.34
  4. Step 4: Simplify right side
    296,963x = 61,934,271,151.58
  5. Step 5: Solve for x
    x = 61,934,271,151.58/296,963
  6. Step 6: Final answer
    x = 208,558.88

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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.