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Finding the Fourth Proportional to 319,593.81, 479,573.88 and 130,019.19

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Solution

The fourth proportional to 319,593.81, 479,573.88 and 130,019.19 is: 195,103.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,593.81 : 479,573.88 = 130,019.19 : x
  2. Step 2: Convert to fraction form
    319,593.81/479,573.88 = 130,019.19/x
  3. Step 3: Cross multiply
    319,593.81x = 479,573.88 × 130,019.19
  4. Step 4: Simplify right side
    319,593.81x = 62,353,807,422.76
  5. Step 5: Solve for x
    x = 62,353,807,422.76/319,593.81
  6. Step 6: Final answer
    x = 195,103.30

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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.