Home / 256,868,949.70-354,479,152.94-139,394,279.77

Finding the Fourth Proportional to 256,868,949.70, 354,479,152.94 and 139,394,279.77

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Solution

The fourth proportional to 256,868,949.70, 354,479,152.94 and 139,394,279.77 is: 192,364,107.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,868,949.70 : 354,479,152.94 = 139,394,279.77 : x
  2. Step 2: Convert to fraction form
    256,868,949.70/354,479,152.94 = 139,394,279.77/x
  3. Step 3: Cross multiply
    256,868,949.70x = 354,479,152.94 × 139,394,279.77
  4. Step 4: Simplify right side
    256,868,949.70x = 49,412,366,217,550,984
  5. Step 5: Solve for x
    x = 49,412,366,217,550,984/256,868,949.70
  6. Step 6: Final answer
    x = 192,364,107.36

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1.5x scale

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.