Home / 387,871,527.82-535,274,012.34-211,670,872.56

Finding the Fourth Proportional to 387,871,527.82, 535,274,012.34 and 211,670,872.56

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Solution

The fourth proportional to 387,871,527.82, 535,274,012.34 and 211,670,872.56 is: 292,111,972.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,871,527.82 : 535,274,012.34 = 211,670,872.56 : x
  2. Step 2: Convert to fraction form
    387,871,527.82/535,274,012.34 = 211,670,872.56/x
  3. Step 3: Cross multiply
    387,871,527.82x = 535,274,012.34 × 211,670,872.56
  4. Step 4: Simplify right side
    387,871,527.82x = 113,301,917,250,700,000
  5. Step 5: Solve for x
    x = 113,301,917,250,700,000/387,871,527.82
  6. Step 6: Final answer
    x = 292,111,972.97

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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.