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Finding the Fourth Proportional to 328,910.88, 493,507.12 and 104,289.76

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Solution

The fourth proportional to 328,910.88, 493,507.12 and 104,289.76 is: 156,479.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,910.88 : 493,507.12 = 104,289.76 : x
  2. Step 2: Convert to fraction form
    328,910.88/493,507.12 = 104,289.76/x
  3. Step 3: Cross multiply
    328,910.88x = 493,507.12 × 104,289.76
  4. Step 4: Simplify right side
    328,910.88x = 51,467,739,103.09
  5. Step 5: Solve for x
    x = 51,467,739,103.09/328,910.88
  6. Step 6: Final answer
    x = 156,479.28

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1.5x scale

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.