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Finding the Fourth Proportional to 347,479, 521,219.58 and 84,823

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Solution

The fourth proportional to 347,479, 521,219.58 and 84,823 is: 127,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,479 : 521,219.58 = 84,823 : x
  2. Step 2: Convert to fraction form
    347,479/521,219.58 = 84,823/x
  3. Step 3: Cross multiply
    347,479x = 521,219.58 × 84,823
  4. Step 4: Simplify right side
    347,479x = 44,211,408,434.34
  5. Step 5: Solve for x
    x = 44,211,408,434.34/347,479
  6. Step 6: Final answer
    x = 127,234.76

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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.