Home / 256,868,820.45-354,478,974.76-139,394,150.69

Finding the Fourth Proportional to 256,868,820.45, 354,478,974.76 and 139,394,150.69

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Solution

The fourth proportional to 256,868,820.45, 354,478,974.76 and 139,394,150.69 is: 192,363,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,868,820.45 : 354,478,974.76 = 139,394,150.69 : x
  2. Step 2: Convert to fraction form
    256,868,820.45/354,478,974.76 = 139,394,150.69/x
  3. Step 3: Cross multiply
    256,868,820.45x = 354,478,974.76 × 139,394,150.69
  4. Step 4: Simplify right side
    256,868,820.45x = 49,412,295,625,192,584
  5. Step 5: Solve for x
    x = 49,412,295,625,192,584/256,868,820.45
  6. Step 6: Final answer
    x = 192,363,929.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.