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Finding the Fourth Proportional to 545,967.60, 819,066.60 and 172,028.40

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Solution

The fourth proportional to 545,967.60, 819,066.60 and 172,028.40 is: 258,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,967.60 : 819,066.60 = 172,028.40 : x
  2. Step 2: Convert to fraction form
    545,967.60/819,066.60 = 172,028.40/x
  3. Step 3: Cross multiply
    545,967.60x = 819,066.60 × 172,028.40
  4. Step 4: Simplify right side
    545,967.60x = 140,902,716,691.44
  5. Step 5: Solve for x
    x = 140,902,716,691.44/545,967.60
  6. Step 6: Final answer
    x = 258,078.90

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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.