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Finding the Fourth Proportional to 343,662.80, 515,056.80 and 306,046.40

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Solution

The fourth proportional to 343,662.80, 515,056.80 and 306,046.40 is: 458,680.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,662.80 : 515,056.80 = 306,046.40 : x
  2. Step 2: Convert to fraction form
    343,662.80/515,056.80 = 306,046.40/x
  3. Step 3: Cross multiply
    343,662.80x = 515,056.80 × 306,046.40
  4. Step 4: Simplify right side
    343,662.80x = 157,631,279,435.52
  5. Step 5: Solve for x
    x = 157,631,279,435.52/343,662.80
  6. Step 6: Final answer
    x = 458,680.08

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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.