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Finding the Fourth Proportional to 328,697.55, 493,110.26 and 126,278.91

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Solution

The fourth proportional to 328,697.55, 493,110.26 and 126,278.91 is: 189,442.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,697.55 : 493,110.26 = 126,278.91 : x
  2. Step 2: Convert to fraction form
    328,697.55/493,110.26 = 126,278.91/x
  3. Step 3: Cross multiply
    328,697.55x = 493,110.26 × 126,278.91
  4. Step 4: Simplify right side
    328,697.55x = 62,269,426,142.62
  5. Step 5: Solve for x
    x = 62,269,426,142.62/328,697.55
  6. Step 6: Final answer
    x = 189,442.93

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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.