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Finding the Fourth Proportional to 420,354.84, 630,525.57 and 195,589.56

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Solution

The fourth proportional to 420,354.84, 630,525.57 and 195,589.56 is: 293,381.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,354.84 : 630,525.57 = 195,589.56 : x
  2. Step 2: Convert to fraction form
    420,354.84/630,525.57 = 195,589.56/x
  3. Step 3: Cross multiply
    420,354.84x = 630,525.57 × 195,589.56
  4. Step 4: Simplify right side
    420,354.84x = 123,324,215,652.42
  5. Step 5: Solve for x
    x = 123,324,215,652.42/420,354.84
  6. Step 6: Final answer
    x = 293,381.22

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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.