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Finding the Fourth Proportional to 419,512.74, 578,936.52 and 228,525.72

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Solution

The fourth proportional to 419,512.74, 578,936.52 and 228,525.72 is: 315,370.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,512.74 : 578,936.52 = 228,525.72 : x
  2. Step 2: Convert to fraction form
    419,512.74/578,936.52 = 228,525.72/x
  3. Step 3: Cross multiply
    419,512.74x = 578,936.52 × 228,525.72
  4. Step 4: Simplify right side
    419,512.74x = 132,301,885,067.29
  5. Step 5: Solve for x
    x = 132,301,885,067.29/419,512.74
  6. Step 6: Final answer
    x = 315,370.36

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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.