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Finding the Fourth Proportional to 376,628.40, 564,942.60 and 345,135.60

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Solution

The fourth proportional to 376,628.40, 564,942.60 and 345,135.60 is: 517,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,628.40 : 564,942.60 = 345,135.60 : x
  2. Step 2: Convert to fraction form
    376,628.40/564,942.60 = 345,135.60/x
  3. Step 3: Cross multiply
    376,628.40x = 564,942.60 × 345,135.60
  4. Step 4: Simplify right side
    376,628.40x = 194,981,803,216.56
  5. Step 5: Solve for x
    x = 194,981,803,216.56/376,628.40
  6. Step 6: Final answer
    x = 517,703.40

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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.