Home / 420,121.98-630,463.20-217,904.46

Finding the Fourth Proportional to 420,121.98, 630,463.20 and 217,904.46

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Solution

The fourth proportional to 420,121.98, 630,463.20 and 217,904.46 is: 327,002.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,121.98 : 630,463.20 = 217,904.46 : x
  2. Step 2: Convert to fraction form
    420,121.98/630,463.20 = 217,904.46/x
  3. Step 3: Cross multiply
    420,121.98x = 630,463.20 × 217,904.46
  4. Step 4: Simplify right side
    420,121.98x = 137,380,743,145.87
  5. Step 5: Solve for x
    x = 137,380,743,145.87/420,121.98
  6. Step 6: Final answer
    x = 327,002.04

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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.