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Finding the Fourth Proportional to 373,861.68, 515,868.24 and 220,878.72

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Solution

The fourth proportional to 373,861.68, 515,868.24 and 220,878.72 is: 304,776.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,861.68 : 515,868.24 = 220,878.72 : x
  2. Step 2: Convert to fraction form
    373,861.68/515,868.24 = 220,878.72/x
  3. Step 3: Cross multiply
    373,861.68x = 515,868.24 × 220,878.72
  4. Step 4: Simplify right side
    373,861.68x = 113,944,316,539.85
  5. Step 5: Solve for x
    x = 113,944,316,539.85/373,861.68
  6. Step 6: Final answer
    x = 304,776.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.