Home / 430,817.46-646,319.40-131,290.12

Finding the Fourth Proportional to 430,817.46, 646,319.40 and 131,290.12

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Solution

The fourth proportional to 430,817.46, 646,319.40 and 131,290.12 is: 196,963.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,817.46 : 646,319.40 = 131,290.12 : x
  2. Step 2: Convert to fraction form
    430,817.46/646,319.40 = 131,290.12/x
  3. Step 3: Cross multiply
    430,817.46x = 646,319.40 × 131,290.12
  4. Step 4: Simplify right side
    430,817.46x = 84,855,351,584.33
  5. Step 5: Solve for x
    x = 84,855,351,584.33/430,817.46
  6. Step 6: Final answer
    x = 196,963.59

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1.5x scale

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.