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Finding the Fourth Proportional to 310,686.66, 428,743.52 and 174,720.57

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Solution

The fourth proportional to 310,686.66, 428,743.52 and 174,720.57 is: 241,112.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,686.66 : 428,743.52 = 174,720.57 : x
  2. Step 2: Convert to fraction form
    310,686.66/428,743.52 = 174,720.57/x
  3. Step 3: Cross multiply
    310,686.66x = 428,743.52 × 174,720.57
  4. Step 4: Simplify right side
    310,686.66x = 74,910,309,180.89
  5. Step 5: Solve for x
    x = 74,910,309,180.89/310,686.66
  6. Step 6: Final answer
    x = 241,112.09

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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.