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Finding the Fourth Proportional to 328,450.98, 492,702.40 and 103,828.52

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Solution

The fourth proportional to 328,450.98, 492,702.40 and 103,828.52 is: 155,750.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,450.98 : 492,702.40 = 103,828.52 : x
  2. Step 2: Convert to fraction form
    328,450.98/492,702.40 = 103,828.52/x
  3. Step 3: Cross multiply
    328,450.98x = 492,702.40 × 103,828.52
  4. Step 4: Simplify right side
    328,450.98x = 51,156,560,992.45
  5. Step 5: Solve for x
    x = 51,156,560,992.45/328,450.98
  6. Step 6: Final answer
    x = 155,750.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.