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Finding the Fourth Proportional to 379,393.55, 569,484.50 and 253,910.67

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Solution

The fourth proportional to 379,393.55, 569,484.50 and 253,910.67 is: 381,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,393.55 : 569,484.50 = 253,910.67 : x
  2. Step 2: Convert to fraction form
    379,393.55/569,484.50 = 253,910.67/x
  3. Step 3: Cross multiply
    379,393.55x = 569,484.50 × 253,910.67
  4. Step 4: Simplify right side
    379,393.55x = 144,598,187,544.50
  5. Step 5: Solve for x
    x = 144,598,187,544.50/379,393.55
  6. Step 6: Final answer
    x = 381,129.80

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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.