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Finding the Fourth Proportional to 310,685.54, 428,741.96 and 174,719.45

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Solution

The fourth proportional to 310,685.54, 428,741.96 and 174,719.45 is: 241,110.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,685.54 : 428,741.96 = 174,719.45 : x
  2. Step 2: Convert to fraction form
    310,685.54/428,741.96 = 174,719.45/x
  3. Step 3: Cross multiply
    310,685.54x = 428,741.96 × 174,719.45
  4. Step 4: Simplify right side
    310,685.54x = 74,909,556,425.82
  5. Step 5: Solve for x
    x = 74,909,556,425.82/310,685.54
  6. Step 6: Final answer
    x = 241,110.54

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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.