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Finding the Fourth Proportional to 319,350.88, 479,321.16 and 161,689.80

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Solution

The fourth proportional to 319,350.88, 479,321.16 and 161,689.80 is: 242,683.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,350.88 : 479,321.16 = 161,689.80 : x
  2. Step 2: Convert to fraction form
    319,350.88/479,321.16 = 161,689.80/x
  3. Step 3: Cross multiply
    319,350.88x = 479,321.16 × 161,689.80
  4. Step 4: Simplify right side
    319,350.88x = 77,501,342,496.17
  5. Step 5: Solve for x
    x = 77,501,342,496.17/319,350.88
  6. Step 6: Final answer
    x = 242,683.98

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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.