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Finding the Fourth Proportional to 353,741.82, 487,548.63 and 308,135.58

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Solution

The fourth proportional to 353,741.82, 487,548.63 and 308,135.58 is: 424,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,741.82 : 487,548.63 = 308,135.58 : x
  2. Step 2: Convert to fraction form
    353,741.82/487,548.63 = 308,135.58/x
  3. Step 3: Cross multiply
    353,741.82x = 487,548.63 × 308,135.58
  4. Step 4: Simplify right side
    353,741.82x = 150,231,079,883.26
  5. Step 5: Solve for x
    x = 150,231,079,883.26/353,741.82
  6. Step 6: Final answer
    x = 424,691.32

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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.