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Finding the Fourth Proportional to 329,791,009.80, 494,651,085.30 and 87,453,913.80

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Solution

The fourth proportional to 329,791,009.80, 494,651,085.30 and 87,453,913.80 is: 131,171,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,791,009.80 : 494,651,085.30 = 87,453,913.80 : x
  2. Step 2: Convert to fraction form
    329,791,009.80/494,651,085.30 = 87,453,913.80/x
  3. Step 3: Cross multiply
    329,791,009.80x = 494,651,085.30 × 87,453,913.80
  4. Step 4: Simplify right side
    329,791,009.80x = 43,259,173,374,902,648
  5. Step 5: Solve for x
    x = 43,259,173,374,902,648/329,791,009.80
  6. Step 6: Final answer
    x = 131,171,475.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.