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Finding the Fourth Proportional to 365,970.56, 504,136.98 and 311,347.79

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Solution

The fourth proportional to 365,970.56, 504,136.98 and 311,347.79 is: 428,892.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,970.56 : 504,136.98 = 311,347.79 : x
  2. Step 2: Convert to fraction form
    365,970.56/504,136.98 = 311,347.79/x
  3. Step 3: Cross multiply
    365,970.56x = 504,136.98 × 311,347.79
  4. Step 4: Simplify right side
    365,970.56x = 156,961,934,580.27
  5. Step 5: Solve for x
    x = 156,961,934,580.27/365,970.56
  6. Step 6: Final answer
    x = 428,892.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.