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Finding the Fourth Proportional to 319,708.80, 440,927.28 and 192,360.60

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Solution

The fourth proportional to 319,708.80, 440,927.28 and 192,360.60 is: 265,294.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,708.80 : 440,927.28 = 192,360.60 : x
  2. Step 2: Convert to fraction form
    319,708.80/440,927.28 = 192,360.60/x
  3. Step 3: Cross multiply
    319,708.80x = 440,927.28 × 192,360.60
  4. Step 4: Simplify right side
    319,708.80x = 84,817,036,137.17
  5. Step 5: Solve for x
    x = 84,817,036,137.17/319,708.80
  6. Step 6: Final answer
    x = 265,294.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.