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Finding the Fourth Proportional to 427,647.81, 641,968.65 and 250,282.11

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Solution

The fourth proportional to 427,647.81, 641,968.65 and 250,282.11 is: 375,714.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,647.81 : 641,968.65 = 250,282.11 : x
  2. Step 2: Convert to fraction form
    427,647.81/641,968.65 = 250,282.11/x
  3. Step 3: Cross multiply
    427,647.81x = 641,968.65 × 250,282.11
  4. Step 4: Simplify right side
    427,647.81x = 160,673,268,275.85
  5. Step 5: Solve for x
    x = 160,673,268,275.85/427,647.81
  6. Step 6: Final answer
    x = 375,714.00

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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.