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Finding the Fourth Proportional to 392,549.45, 588,999.13 and 143,173.13

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Solution

The fourth proportional to 392,549.45, 588,999.13 and 143,173.13 is: 214,823.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,549.45 : 588,999.13 = 143,173.13 : x
  2. Step 2: Convert to fraction form
    392,549.45/588,999.13 = 143,173.13/x
  3. Step 3: Cross multiply
    392,549.45x = 588,999.13 × 143,173.13
  4. Step 4: Simplify right side
    392,549.45x = 84,328,845,706.45
  5. Step 5: Solve for x
    x = 84,328,845,706.45/392,549.45
  6. Step 6: Final answer
    x = 214,823.50

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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.