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Finding the Fourth Proportional to 319,757.38, 479,683.46 and 106,455.63

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Solution

The fourth proportional to 319,757.38, 479,683.46 and 106,455.63 is: 159,699.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,757.38 : 479,683.46 = 106,455.63 : x
  2. Step 2: Convert to fraction form
    319,757.38/479,683.46 = 106,455.63/x
  3. Step 3: Cross multiply
    319,757.38x = 479,683.46 × 106,455.63
  4. Step 4: Simplify right side
    319,757.38x = 51,065,004,934.88
  5. Step 5: Solve for x
    x = 51,065,004,934.88/319,757.38
  6. Step 6: Final answer
    x = 159,699.22

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1.5x scale

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.