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Finding the Fourth Proportional to 420,361.34, 630,535.31 and 195,596.06

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Solution

The fourth proportional to 420,361.34, 630,535.31 and 195,596.06 is: 293,390.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,361.34 : 630,535.31 = 195,596.06 : x
  2. Step 2: Convert to fraction form
    420,361.34/630,535.31 = 195,596.06/x
  3. Step 3: Cross multiply
    420,361.34x = 630,535.31 × 195,596.06
  4. Step 4: Simplify right side
    420,361.34x = 123,330,222,326.88
  5. Step 5: Solve for x
    x = 123,330,222,326.88/420,361.34
  6. Step 6: Final answer
    x = 293,390.97

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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.