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Finding the Fourth Proportional to 415,299.15, 620,672.73 and 303,215.40

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Solution

The fourth proportional to 415,299.15, 620,672.73 and 303,215.40 is: 453,161.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,299.15 : 620,672.73 = 303,215.40 : x
  2. Step 2: Convert to fraction form
    415,299.15/620,672.73 = 303,215.40/x
  3. Step 3: Cross multiply
    415,299.15x = 620,672.73 × 303,215.40
  4. Step 4: Simplify right side
    415,299.15x = 188,197,528,958.98
  5. Step 5: Solve for x
    x = 188,197,528,958.98/415,299.15
  6. Step 6: Final answer
    x = 453,161.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.