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Finding the Fourth Proportional to 328,779.56, 493,165.91 and 104,139.92

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Solution

The fourth proportional to 328,779.56, 493,165.91 and 104,139.92 is: 156,208.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,779.56 : 493,165.91 = 104,139.92 : x
  2. Step 2: Convert to fraction form
    328,779.56/493,165.91 = 104,139.92/x
  3. Step 3: Cross multiply
    328,779.56x = 493,165.91 × 104,139.92
  4. Step 4: Simplify right side
    328,779.56x = 51,358,255,427.60
  5. Step 5: Solve for x
    x = 51,358,255,427.60/328,779.56
  6. Step 6: Final answer
    x = 156,208.79

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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.