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Finding the Fourth Proportional to 419,652.32, 579,112.72 and 228,667.36

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Solution

The fourth proportional to 419,652.32, 579,112.72 and 228,667.36 is: 315,556.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,652.32 : 579,112.72 = 228,667.36 : x
  2. Step 2: Convert to fraction form
    419,652.32/579,112.72 = 228,667.36/x
  3. Step 3: Cross multiply
    419,652.32x = 579,112.72 × 228,667.36
  4. Step 4: Simplify right side
    419,652.32x = 132,424,176,824.82
  5. Step 5: Solve for x
    x = 132,424,176,824.82/419,652.32
  6. Step 6: Final answer
    x = 315,556.88

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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.