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Finding the Fourth Proportional to 296,806.76, 445,356.30 and 139,007.96

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Solution

The fourth proportional to 296,806.76, 445,356.30 and 139,007.96 is: 208,580.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,806.76 : 445,356.30 = 139,007.96 : x
  2. Step 2: Convert to fraction form
    296,806.76/445,356.30 = 139,007.96/x
  3. Step 3: Cross multiply
    296,806.76x = 445,356.30 × 139,007.96
  4. Step 4: Simplify right side
    296,806.76x = 61,908,070,736.15
  5. Step 5: Solve for x
    x = 61,908,070,736.15/296,806.76
  6. Step 6: Final answer
    x = 208,580.39

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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.