Home / 387,871,653.88-535,274,186.70-211,670,998.56

Finding the Fourth Proportional to 387,871,653.88, 535,274,186.70 and 211,670,998.56

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Solution

The fourth proportional to 387,871,653.88, 535,274,186.70 and 211,670,998.56 is: 292,112,147.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,871,653.88 : 535,274,186.70 = 211,670,998.56 : x
  2. Step 2: Convert to fraction form
    387,871,653.88/535,274,186.70 = 211,670,998.56/x
  3. Step 3: Cross multiply
    387,871,653.88x = 535,274,186.70 × 211,670,998.56
  4. Step 4: Simplify right side
    387,871,653.88x = 113,302,021,602,180,864
  5. Step 5: Solve for x
    x = 113,302,021,602,180,864/387,871,653.88
  6. Step 6: Final answer
    x = 292,112,147.07

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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.