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Finding the Fourth Proportional to 318,348.69, 439,311.87 and 175,108.65

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Solution

The fourth proportional to 318,348.69, 439,311.87 and 175,108.65 is: 241,644.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,348.69 : 439,311.87 = 175,108.65 : x
  2. Step 2: Convert to fraction form
    318,348.69/439,311.87 = 175,108.65/x
  3. Step 3: Cross multiply
    318,348.69x = 439,311.87 × 175,108.65
  4. Step 4: Simplify right side
    318,348.69x = 76,927,308,484.68
  5. Step 5: Solve for x
    x = 76,927,308,484.68/318,348.69
  6. Step 6: Final answer
    x = 241,644.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.