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Finding the Fourth Proportional to 305,609.76, 458,417.80 and 92,379.44

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Solution

The fourth proportional to 305,609.76, 458,417.80 and 92,379.44 is: 138,570.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,609.76 : 458,417.80 = 92,379.44 : x
  2. Step 2: Convert to fraction form
    305,609.76/458,417.80 = 92,379.44/x
  3. Step 3: Cross multiply
    305,609.76x = 458,417.80 × 92,379.44
  4. Step 4: Simplify right side
    305,609.76x = 42,348,379,650.03
  5. Step 5: Solve for x
    x = 42,348,379,650.03/305,609.76
  6. Step 6: Final answer
    x = 138,570.12

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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.