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Finding the Fourth Proportional to 319,505.44, 479,792.88 and 306,791.20

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Solution

The fourth proportional to 319,505.44, 479,792.88 and 306,791.20 is: 460,700.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,505.44 : 479,792.88 = 306,791.20 : x
  2. Step 2: Convert to fraction form
    319,505.44/479,792.88 = 306,791.20/x
  3. Step 3: Cross multiply
    319,505.44x = 479,792.88 × 306,791.20
  4. Step 4: Simplify right side
    319,505.44x = 147,196,233,406.66
  5. Step 5: Solve for x
    x = 147,196,233,406.66/319,505.44
  6. Step 6: Final answer
    x = 460,700.24

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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.