Home / 392,972,497,099.80-542,302,041,798.54-212,531,404,347.60

Finding the Fourth Proportional to 392,972,497,099.80, 542,302,041,798.54 and 212,531,404,347.60

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Solution

The fourth proportional to 392,972,497,099.80, 542,302,041,798.54 and 212,531,404,347.60 is: 293,293,335,728.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,972,497,099.80 : 542,302,041,798.54 = 212,531,404,347.60 : x
  2. Step 2: Convert to fraction form
    392,972,497,099.80/542,302,041,798.54 = 212,531,404,347.60/x
  3. Step 3: Cross multiply
    392,972,497,099.80x = 542,302,041,798.54 × 212,531,404,347.60
  4. Step 4: Simplify right side
    392,972,497,099.80x = 115,256,214,524,014,584,922,112
  5. Step 5: Solve for x
    x = 115,256,214,524,014,584,922,112/392,972,497,099.80
  6. Step 6: Final answer
    x = 293,293,335,728.64

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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.