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Finding the Fourth Proportional to 379,394.55, 569,486 and 253,911.67

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Solution

The fourth proportional to 379,394.55, 569,486 and 253,911.67 is: 381,131.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,394.55 : 569,486 = 253,911.67 : x
  2. Step 2: Convert to fraction form
    379,394.55/569,486 = 253,911.67/x
  3. Step 3: Cross multiply
    379,394.55x = 569,486 × 253,911.67
  4. Step 4: Simplify right side
    379,394.55x = 144,599,141,301.62
  5. Step 5: Solve for x
    x = 144,599,141,301.62/379,394.55
  6. Step 6: Final answer
    x = 381,131.31

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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.