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Finding the Fourth Proportional to 263,878.40, 395,817.60 and 254,547.20

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Solution

The fourth proportional to 263,878.40, 395,817.60 and 254,547.20 is: 381,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,878.40 : 395,817.60 = 254,547.20 : x
  2. Step 2: Convert to fraction form
    263,878.40/395,817.60 = 254,547.20/x
  3. Step 3: Cross multiply
    263,878.40x = 395,817.60 × 254,547.20
  4. Step 4: Simplify right side
    263,878.40x = 100,754,261,790.72
  5. Step 5: Solve for x
    x = 100,754,261,790.72/263,878.40
  6. Step 6: Final answer
    x = 381,820.80

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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.