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Finding the Fourth Proportional to 392,985.01, 588,984.54 and 168,081.49

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Solution

The fourth proportional to 392,985.01, 588,984.54 and 168,081.49 is: 251,911.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,985.01 : 588,984.54 = 168,081.49 : x
  2. Step 2: Convert to fraction form
    392,985.01/588,984.54 = 168,081.49/x
  3. Step 3: Cross multiply
    392,985.01x = 588,984.54 × 168,081.49
  4. Step 4: Simplify right side
    392,985.01x = 98,997,399,070.16
  5. Step 5: Solve for x
    x = 98,997,399,070.16/392,985.01
  6. Step 6: Final answer
    x = 251,911.39

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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.