Home / 368,640,780.22-508,739,731.86-212,008,009.54

Finding the Fourth Proportional to 368,640,780.22, 508,739,731.86 and 212,008,009.54

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Solution

The fourth proportional to 368,640,780.22, 508,739,731.86 and 212,008,009.54 is: 292,579,941.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,640,780.22 : 508,739,731.86 = 212,008,009.54 : x
  2. Step 2: Convert to fraction form
    368,640,780.22/508,739,731.86 = 212,008,009.54/x
  3. Step 3: Cross multiply
    368,640,780.22x = 508,739,731.86 × 212,008,009.54
  4. Step 4: Simplify right side
    368,640,780.22x = 107,856,897,925,551,920
  5. Step 5: Solve for x
    x = 107,856,897,925,551,920/368,640,780.22
  6. Step 6: Final answer
    x = 292,579,941.54

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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.