Home / 488,255.79-731,508.89-172,511.31

Finding the Fourth Proportional to 488,255.79, 731,508.89 and 172,511.31

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Solution

The fourth proportional to 488,255.79, 731,508.89 and 172,511.31 is: 258,457.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,255.79 : 731,508.89 = 172,511.31 : x
  2. Step 2: Convert to fraction form
    488,255.79/731,508.89 = 172,511.31/x
  3. Step 3: Cross multiply
    488,255.79x = 731,508.89 × 172,511.31
  4. Step 4: Simplify right side
    488,255.79x = 126,193,556,027.99
  5. Step 5: Solve for x
    x = 126,193,556,027.99/488,255.79
  6. Step 6: Final answer
    x = 258,457.88

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1.5x scale

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.