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Finding the Fourth Proportional to 343,669.80, 515,067.30 and 306,053.40

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Solution

The fourth proportional to 343,669.80, 515,067.30 and 306,053.40 is: 458,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,669.80 : 515,067.30 = 306,053.40 : x
  2. Step 2: Convert to fraction form
    343,669.80/515,067.30 = 306,053.40/x
  3. Step 3: Cross multiply
    343,669.80x = 515,067.30 × 306,053.40
  4. Step 4: Simplify right side
    343,669.80x = 157,638,098,393.82
  5. Step 5: Solve for x
    x = 157,638,098,393.82/343,669.80
  6. Step 6: Final answer
    x = 458,690.58

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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.