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Finding the Fourth Proportional to 328,763.66, 493,140.12 and 104,123.76

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Solution

The fourth proportional to 328,763.66, 493,140.12 and 104,123.76 is: 156,183.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,763.66 : 493,140.12 = 104,123.76 : x
  2. Step 2: Convert to fraction form
    328,763.66/493,140.12 = 104,123.76/x
  3. Step 3: Cross multiply
    328,763.66x = 493,140.12 × 104,123.76
  4. Step 4: Simplify right side
    328,763.66x = 51,347,603,501.25
  5. Step 5: Solve for x
    x = 51,347,603,501.25/328,763.66
  6. Step 6: Final answer
    x = 156,183.94

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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.