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Finding the Fourth Proportional to 353,090.74, 487,259.47 and 191,949.85

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Solution

The fourth proportional to 353,090.74, 487,259.47 and 191,949.85 is: 264,887.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,090.74 : 487,259.47 = 191,949.85 : x
  2. Step 2: Convert to fraction form
    353,090.74/487,259.47 = 191,949.85/x
  3. Step 3: Cross multiply
    353,090.74x = 487,259.47 × 191,949.85
  4. Step 4: Simplify right side
    353,090.74x = 93,529,380,479.56
  5. Step 5: Solve for x
    x = 93,529,380,479.56/353,090.74
  6. Step 6: Final answer
    x = 264,887.66

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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.