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Finding the Fourth Proportional to 488,276.25, 732,408.93 and 172,659.36

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Solution

The fourth proportional to 488,276.25, 732,408.93 and 172,659.36 is: 258,987.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,276.25 : 732,408.93 = 172,659.36 : x
  2. Step 2: Convert to fraction form
    488,276.25/732,408.93 = 172,659.36/x
  3. Step 3: Cross multiply
    488,276.25x = 732,408.93 × 172,659.36
  4. Step 4: Simplify right side
    488,276.25x = 126,457,257,112.09
  5. Step 5: Solve for x
    x = 126,457,257,112.09/488,276.25
  6. Step 6: Final answer
    x = 258,987.11

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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.