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Finding the Fourth Proportional to 315,050.80, 472,576.20 and 287,494.60

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Solution

The fourth proportional to 315,050.80, 472,576.20 and 287,494.60 is: 431,241.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,050.80 : 472,576.20 = 287,494.60 : x
  2. Step 2: Convert to fraction form
    315,050.80/472,576.20 = 287,494.60/x
  3. Step 3: Cross multiply
    315,050.80x = 472,576.20 × 287,494.60
  4. Step 4: Simplify right side
    315,050.80x = 135,863,105,588.52
  5. Step 5: Solve for x
    x = 135,863,105,588.52/315,050.80
  6. Step 6: Final answer
    x = 431,241.90

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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.