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Finding the Fourth Proportional to 488,518.98, 732,690.63 and 172,977.54

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Solution

The fourth proportional to 488,518.98, 732,690.63 and 172,977.54 is: 259,435.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,518.98 : 732,690.63 = 172,977.54 : x
  2. Step 2: Convert to fraction form
    488,518.98/732,690.63 = 172,977.54/x
  3. Step 3: Cross multiply
    488,518.98x = 732,690.63 × 172,977.54
  4. Step 4: Simplify right side
    488,518.98x = 126,739,022,758.45
  5. Step 5: Solve for x
    x = 126,739,022,758.45/488,518.98
  6. Step 6: Final answer
    x = 259,435.21

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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.