Home / 222,932,615.13-307,629,008.28-128,852,856.54

Finding the Fourth Proportional to 222,932,615.13, 307,629,008.28 and 128,852,856.54

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Solution

The fourth proportional to 222,932,615.13, 307,629,008.28 and 128,852,856.54 is: 177,806,537.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,932,615.13 : 307,629,008.28 = 128,852,856.54 : x
  2. Step 2: Convert to fraction form
    222,932,615.13/307,629,008.28 = 128,852,856.54/x
  3. Step 3: Cross multiply
    222,932,615.13x = 307,629,008.28 × 128,852,856.54
  4. Step 4: Simplify right side
    222,932,615.13x = 39,638,876,471,445,312
  5. Step 5: Solve for x
    x = 39,638,876,471,445,312/222,932,615.13
  6. Step 6: Final answer
    x = 177,806,537.86

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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.