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Finding the Fourth Proportional to 319,362, 479,041.08 and 82,704.08

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Solution

The fourth proportional to 319,362, 479,041.08 and 82,704.08 is: 124,055.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,362 : 479,041.08 = 82,704.08 : x
  2. Step 2: Convert to fraction form
    319,362/479,041.08 = 82,704.08/x
  3. Step 3: Cross multiply
    319,362x = 479,041.08 × 82,704.08
  4. Step 4: Simplify right side
    319,362x = 39,618,651,803.61
  5. Step 5: Solve for x
    x = 39,618,651,803.61/319,362
  6. Step 6: Final answer
    x = 124,055.62

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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.