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Finding the Fourth Proportional to 424,912.18, 637,049.88 and 256,392.64

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Solution

The fourth proportional to 424,912.18, 637,049.88 and 256,392.64 is: 384,396.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,912.18 : 637,049.88 = 256,392.64 : x
  2. Step 2: Convert to fraction form
    424,912.18/637,049.88 = 256,392.64/x
  3. Step 3: Cross multiply
    424,912.18x = 637,049.88 × 256,392.64
  4. Step 4: Simplify right side
    424,912.18x = 163,334,900,544.88
  5. Step 5: Solve for x
    x = 163,334,900,544.88/424,912.18
  6. Step 6: Final answer
    x = 384,396.84

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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.