Home / 389,935,364,609.03-538,111,436,196.83-216,320,508,550.73

Finding the Fourth Proportional to 389,935,364,609.03, 538,111,436,196.83 and 216,320,508,550.73

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Solution

The fourth proportional to 389,935,364,609.03, 538,111,436,196.83 and 216,320,508,550.73 is: 298,522,652,983.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,935,364,609.03 : 538,111,436,196.83 = 216,320,508,550.73 : x
  2. Step 2: Convert to fraction form
    389,935,364,609.03/538,111,436,196.83 = 216,320,508,550.73/x
  3. Step 3: Cross multiply
    389,935,364,609.03x = 538,111,436,196.83 × 216,320,508,550.73
  4. Step 4: Simplify right side
    389,935,364,609.03x = 116,404,539,535,061,971,632,128
  5. Step 5: Solve for x
    x = 116,404,539,535,061,971,632,128/389,935,364,609.03
  6. Step 6: Final answer
    x = 298,522,652,983.21

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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.