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Finding the Fourth Proportional to 383,985, 576,234.60 and 159,345.66

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Solution

The fourth proportional to 383,985, 576,234.60 and 159,345.66 is: 239,125.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,985 : 576,234.60 = 159,345.66 : x
  2. Step 2: Convert to fraction form
    383,985/576,234.60 = 159,345.66/x
  3. Step 3: Cross multiply
    383,985x = 576,234.60 × 159,345.66
  4. Step 4: Simplify right side
    383,985x = 91,820,482,651.84
  5. Step 5: Solve for x
    x = 91,820,482,651.84/383,985
  6. Step 6: Final answer
    x = 239,125.18

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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.