Home / 256,317,661.37-353,720,071.06-138,842,991.61

Finding the Fourth Proportional to 256,317,661.37, 353,720,071.06 and 138,842,991.61

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Solution

The fourth proportional to 256,317,661.37, 353,720,071.06 and 138,842,991.61 is: 191,604,248.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,317,661.37 : 353,720,071.06 = 138,842,991.61 : x
  2. Step 2: Convert to fraction form
    256,317,661.37/353,720,071.06 = 138,842,991.61/x
  3. Step 3: Cross multiply
    256,317,661.37x = 353,720,071.06 × 138,842,991.61
  4. Step 4: Simplify right side
    256,317,661.37x = 49,111,552,857,240,776
  5. Step 5: Solve for x
    x = 49,111,552,857,240,776/256,317,661.37
  6. Step 6: Final answer
    x = 191,604,248.39

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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.