Home / 389,935,364,608.03-538,111,436,195.45-216,320,508,549.73

Finding the Fourth Proportional to 389,935,364,608.03, 538,111,436,195.45 and 216,320,508,549.73

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Solution

The fourth proportional to 389,935,364,608.03, 538,111,436,195.45 and 216,320,508,549.73 is: 298,522,652,981.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,935,364,608.03 : 538,111,436,195.45 = 216,320,508,549.73 : x
  2. Step 2: Convert to fraction form
    389,935,364,608.03/538,111,436,195.45 = 216,320,508,549.73/x
  3. Step 3: Cross multiply
    389,935,364,608.03x = 538,111,436,195.45 × 216,320,508,549.73
  4. Step 4: Simplify right side
    389,935,364,608.03x = 116,404,539,534,225,342,201,856
  5. Step 5: Solve for x
    x = 116,404,539,534,225,342,201,856/389,935,364,608.03
  6. Step 6: Final answer
    x = 298,522,652,981.83

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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.