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Finding the Fourth Proportional to 488,018.12, 732,086.24 and 172,410.44

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Solution

The fourth proportional to 488,018.12, 732,086.24 and 172,410.44 is: 258,636.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,018.12 : 732,086.24 = 172,410.44 : x
  2. Step 2: Convert to fraction form
    488,018.12/732,086.24 = 172,410.44/x
  3. Step 3: Cross multiply
    488,018.12x = 732,086.24 × 172,410.44
  4. Step 4: Simplify right side
    488,018.12x = 126,219,310,756.35
  5. Step 5: Solve for x
    x = 126,219,310,756.35/488,018.12
  6. Step 6: Final answer
    x = 258,636.53

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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.