Home / 487,749.94-731,858.16-172,355.38

Finding the Fourth Proportional to 487,749.94, 731,858.16 and 172,355.38

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Solution

The fourth proportional to 487,749.94, 731,858.16 and 172,355.38 is: 258,615.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,749.94 : 731,858.16 = 172,355.38 : x
  2. Step 2: Convert to fraction form
    487,749.94/731,858.16 = 172,355.38/x
  3. Step 3: Cross multiply
    487,749.94x = 731,858.16 × 172,355.38
  4. Step 4: Simplify right side
    487,749.94x = 126,139,691,272.90
  5. Step 5: Solve for x
    x = 126,139,691,272.90/487,749.94
  6. Step 6: Final answer
    x = 258,615.49

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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.