Home / 392,782,665.70-542,064,272.87-216,570,116.13

Finding the Fourth Proportional to 392,782,665.70, 542,064,272.87 and 216,570,116.13

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Solution

The fourth proportional to 392,782,665.70, 542,064,272.87 and 216,570,116.13 is: 298,880,100.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,782,665.70 : 542,064,272.87 = 216,570,116.13 : x
  2. Step 2: Convert to fraction form
    392,782,665.70/542,064,272.87 = 216,570,116.13/x
  3. Step 3: Cross multiply
    392,782,665.70x = 542,064,272.87 × 216,570,116.13
  4. Step 4: Simplify right side
    392,782,665.70x = 117,394,922,524,424,672
  5. Step 5: Solve for x
    x = 117,394,922,524,424,672/392,782,665.70
  6. Step 6: Final answer
    x = 298,880,100.31

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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.