Home / 315,536.20-435,457.68-172,309.60

Finding the Fourth Proportional to 315,536.20, 435,457.68 and 172,309.60

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Solution

The fourth proportional to 315,536.20, 435,457.68 and 172,309.60 is: 237,796.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,536.20 : 435,457.68 = 172,309.60 : x
  2. Step 2: Convert to fraction form
    315,536.20/435,457.68 = 172,309.60/x
  3. Step 3: Cross multiply
    315,536.20x = 435,457.68 × 172,309.60
  4. Step 4: Simplify right side
    315,536.20x = 75,033,538,657.73
  5. Step 5: Solve for x
    x = 75,033,538,657.73/315,536.20
  6. Step 6: Final answer
    x = 237,796.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.