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Finding the Fourth Proportional to 419,040.52, 578,264.80 and 228,049.80

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Solution

The fourth proportional to 419,040.52, 578,264.80 and 228,049.80 is: 314,702.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,040.52 : 578,264.80 = 228,049.80 : x
  2. Step 2: Convert to fraction form
    419,040.52/578,264.80 = 228,049.80/x
  3. Step 3: Cross multiply
    419,040.52x = 578,264.80 × 228,049.80
  4. Step 4: Simplify right side
    419,040.52x = 131,873,171,987.04
  5. Step 5: Solve for x
    x = 131,873,171,987.04/419,040.52
  6. Step 6: Final answer
    x = 314,702.67

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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.