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Finding the Fourth Proportional to 386,518.67, 579,768.52 and 149,861.43

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Solution

The fourth proportional to 386,518.67, 579,768.52 and 149,861.43 is: 224,788.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,518.67 : 579,768.52 = 149,861.43 : x
  2. Step 2: Convert to fraction form
    386,518.67/579,768.52 = 149,861.43/x
  3. Step 3: Cross multiply
    386,518.67x = 579,768.52 × 149,861.43
  4. Step 4: Simplify right side
    386,518.67x = 86,884,939,476.18
  5. Step 5: Solve for x
    x = 86,884,939,476.18/386,518.67
  6. Step 6: Final answer
    x = 224,788.47

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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.