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Finding the Fourth Proportional to 319,900.80, 479,566 and 162,048

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Solution

The fourth proportional to 319,900.80, 479,566 and 162,048 is: 242,927.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,900.80 : 479,566 = 162,048 : x
  2. Step 2: Convert to fraction form
    319,900.80/479,566 = 162,048/x
  3. Step 3: Cross multiply
    319,900.80x = 479,566 × 162,048
  4. Step 4: Simplify right side
    319,900.80x = 77,712,711,168
  5. Step 5: Solve for x
    x = 77,712,711,168/319,900.80
  6. Step 6: Final answer
    x = 242,927.53

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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.