Home / 392,782,665.94-542,064,273.19-216,570,116.36

Finding the Fourth Proportional to 392,782,665.94, 542,064,273.19 and 216,570,116.36

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Solution

The fourth proportional to 392,782,665.94, 542,064,273.19 and 216,570,116.36 is: 298,880,100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,782,665.94 : 542,064,273.19 = 216,570,116.36 : x
  2. Step 2: Convert to fraction form
    392,782,665.94/542,064,273.19 = 216,570,116.36/x
  3. Step 3: Cross multiply
    392,782,665.94x = 542,064,273.19 × 216,570,116.36
  4. Step 4: Simplify right side
    392,782,665.94x = 117,394,922,721,595,984
  5. Step 5: Solve for x
    x = 117,394,922,721,595,984/392,782,665.94
  6. Step 6: Final answer
    x = 298,880,100.63

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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.