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Finding the Fourth Proportional to 319,851.96, 479,943.96 and 130,451.28

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Solution

The fourth proportional to 319,851.96, 479,943.96 and 130,451.28 is: 195,744.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,851.96 : 479,943.96 = 130,451.28 : x
  2. Step 2: Convert to fraction form
    319,851.96/479,943.96 = 130,451.28/x
  3. Step 3: Cross multiply
    319,851.96x = 479,943.96 × 130,451.28
  4. Step 4: Simplify right side
    319,851.96x = 62,609,303,910.27
  5. Step 5: Solve for x
    x = 62,609,303,910.27/319,851.96
  6. Step 6: Final answer
    x = 195,744.63

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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.