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Finding the Fourth Proportional to 419,606.34, 579,049.44 and 228,621.12

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Solution

The fourth proportional to 419,606.34, 579,049.44 and 228,621.12 is: 315,493.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,606.34 : 579,049.44 = 228,621.12 : x
  2. Step 2: Convert to fraction form
    419,606.34/579,049.44 = 228,621.12/x
  3. Step 3: Cross multiply
    419,606.34x = 579,049.44 × 228,621.12
  4. Step 4: Simplify right side
    419,606.34x = 132,382,931,508.17
  5. Step 5: Solve for x
    x = 132,382,931,508.17/419,606.34
  6. Step 6: Final answer
    x = 315,493.16

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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.