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Finding the Fourth Proportional to 347,420.59, 479,739.62 and 218,573.82

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Solution

The fourth proportional to 347,420.59, 479,739.62 and 218,573.82 is: 301,820.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,420.59 : 479,739.62 = 218,573.82 : x
  2. Step 2: Convert to fraction form
    347,420.59/479,739.62 = 218,573.82/x
  3. Step 3: Cross multiply
    347,420.59x = 479,739.62 × 218,573.82
  4. Step 4: Simplify right side
    347,420.59x = 104,858,521,348.75
  5. Step 5: Solve for x
    x = 104,858,521,348.75/347,420.59
  6. Step 6: Final answer
    x = 301,820.11

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1.5x scale

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.