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Finding the Fourth Proportional to 328,963.80, 493,494.30 and 104,345.40

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Solution

The fourth proportional to 328,963.80, 493,494.30 and 104,345.40 is: 156,533.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,963.80 : 493,494.30 = 104,345.40 : x
  2. Step 2: Convert to fraction form
    328,963.80/493,494.30 = 104,345.40/x
  3. Step 3: Cross multiply
    328,963.80x = 493,494.30 × 104,345.40
  4. Step 4: Simplify right side
    328,963.80x = 51,493,860,131.22
  5. Step 5: Solve for x
    x = 51,493,860,131.22/328,963.80
  6. Step 6: Final answer
    x = 156,533.52

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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.