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Finding the Fourth Proportional to 341,416.80, 511,687.80 and 303,800.40

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Solution

The fourth proportional to 341,416.80, 511,687.80 and 303,800.40 is: 455,311.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,416.80 : 511,687.80 = 303,800.40 : x
  2. Step 2: Convert to fraction form
    341,416.80/511,687.80 = 303,800.40/x
  3. Step 3: Cross multiply
    341,416.80x = 511,687.80 × 303,800.40
  4. Step 4: Simplify right side
    341,416.80x = 155,450,958,315.12
  5. Step 5: Solve for x
    x = 155,450,958,315.12/341,416.80
  6. Step 6: Final answer
    x = 455,311.39

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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.