Home / 256,403,059.61-353,835,146.07-138,928,857.18

Finding the Fourth Proportional to 256,403,059.61, 353,835,146.07 and 138,928,857.18

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Solution

The fourth proportional to 256,403,059.61, 353,835,146.07 and 138,928,857.18 is: 191,721,239.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,403,059.61 : 353,835,146.07 = 138,928,857.18 : x
  2. Step 2: Convert to fraction form
    256,403,059.61/353,835,146.07 = 138,928,857.18/x
  3. Step 3: Cross multiply
    256,403,059.61x = 353,835,146.07 × 138,928,857.18
  4. Step 4: Simplify right side
    256,403,059.61x = 49,157,912,472,296,592
  5. Step 5: Solve for x
    x = 49,157,912,472,296,592/256,403,059.61
  6. Step 6: Final answer
    x = 191,721,239.79

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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.