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Finding the Fourth Proportional to 368,640,776.22, 508,739,726.34 and 212,008,005.54

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Solution

The fourth proportional to 368,640,776.22, 508,739,726.34 and 212,008,005.54 is: 292,579,936.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,640,776.22 : 508,739,726.34 = 212,008,005.54 : x
  2. Step 2: Convert to fraction form
    368,640,776.22/508,739,726.34 = 212,008,005.54/x
  3. Step 3: Cross multiply
    368,640,776.22x = 508,739,726.34 × 212,008,005.54
  4. Step 4: Simplify right side
    368,640,776.22x = 107,856,894,720,308,800
  5. Step 5: Solve for x
    x = 107,856,894,720,308,800/368,640,776.22
  6. Step 6: Final answer
    x = 292,579,936.02

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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.