Home / 296,865.38-445,451.16-139,109.78

Finding the Fourth Proportional to 296,865.38, 445,451.16 and 139,109.78

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Solution

The fourth proportional to 296,865.38, 445,451.16 and 139,109.78 is: 208,736.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,865.38 : 445,451.16 = 139,109.78 : x
  2. Step 2: Convert to fraction form
    296,865.38/445,451.16 = 139,109.78/x
  3. Step 3: Cross multiply
    296,865.38x = 445,451.16 × 139,109.78
  4. Step 4: Simplify right side
    296,865.38x = 61,966,612,868.34
  5. Step 5: Solve for x
    x = 61,966,612,868.34/296,865.38
  6. Step 6: Final answer
    x = 208,736.41

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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.