Home / 256,638,203.06-384,803,573.07-81,685,668.02

Finding the Fourth Proportional to 256,638,203.06, 384,803,573.07 and 81,685,668.02

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Solution

The fourth proportional to 256,638,203.06, 384,803,573.07 and 81,685,668.02 is: 122,479,570.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,638,203.06 : 384,803,573.07 = 81,685,668.02 : x
  2. Step 2: Convert to fraction form
    256,638,203.06/384,803,573.07 = 81,685,668.02/x
  3. Step 3: Cross multiply
    256,638,203.06x = 384,803,573.07 × 81,685,668.02
  4. Step 4: Simplify right side
    256,638,203.06x = 31,432,936,922,705,832
  5. Step 5: Solve for x
    x = 31,432,936,922,705,832/256,638,203.06
  6. Step 6: Final answer
    x = 122,479,570.65

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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.