Home / 319,738.40-479,607.60-306,087.20

Finding the Fourth Proportional to 319,738.40, 479,607.60 and 306,087.20

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Solution

The fourth proportional to 319,738.40, 479,607.60 and 306,087.20 is: 459,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,738.40 : 479,607.60 = 306,087.20 : x
  2. Step 2: Convert to fraction form
    319,738.40/479,607.60 = 306,087.20/x
  3. Step 3: Cross multiply
    319,738.40x = 479,607.60 × 306,087.20
  4. Step 4: Simplify right side
    319,738.40x = 146,801,747,382.72
  5. Step 5: Solve for x
    x = 146,801,747,382.72/319,738.40
  6. Step 6: Final answer
    x = 459,130.80

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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.