Home / 256,317,638.66-353,720,039.67-138,842,968.86

Finding the Fourth Proportional to 256,317,638.66, 353,720,039.67 and 138,842,968.86

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Solution

The fourth proportional to 256,317,638.66, 353,720,039.67 and 138,842,968.86 is: 191,604,216.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,317,638.66 : 353,720,039.67 = 138,842,968.86 : x
  2. Step 2: Convert to fraction form
    256,317,638.66/353,720,039.67 = 138,842,968.86/x
  3. Step 3: Cross multiply
    256,317,638.66x = 353,720,039.67 × 138,842,968.86
  4. Step 4: Simplify right side
    256,317,638.66x = 49,111,540,453,059,784
  5. Step 5: Solve for x
    x = 49,111,540,453,059,784/256,317,638.66
  6. Step 6: Final answer
    x = 191,604,216.98

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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.