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Finding the Fourth Proportional to 333,705.44, 500,553.95 and 80,988

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Solution

The fourth proportional to 333,705.44, 500,553.95 and 80,988 is: 121,480.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,705.44 : 500,553.95 = 80,988 : x
  2. Step 2: Convert to fraction form
    333,705.44/500,553.95 = 80,988/x
  3. Step 3: Cross multiply
    333,705.44x = 500,553.95 × 80,988
  4. Step 4: Simplify right side
    333,705.44x = 40,538,862,897.66
  5. Step 5: Solve for x
    x = 40,538,862,897.66/333,705.44
  6. Step 6: Final answer
    x = 121,480.98

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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.