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Finding the Fourth Proportional to 488,455.30, 732,812.55 and 172,879.30

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Solution

The fourth proportional to 488,455.30, 732,812.55 and 172,879.30 is: 259,364.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,455.30 : 732,812.55 = 172,879.30 : x
  2. Step 2: Convert to fraction form
    488,455.30/732,812.55 = 172,879.30/x
  3. Step 3: Cross multiply
    488,455.30x = 732,812.55 × 172,879.30
  4. Step 4: Simplify right side
    488,455.30x = 126,688,120,675.22
  5. Step 5: Solve for x
    x = 126,688,120,675.22/488,455.30
  6. Step 6: Final answer
    x = 259,364.82

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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.