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Finding the Fourth Proportional to 239,523.86, 330,538.45 and 130,629.49

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Solution

The fourth proportional to 239,523.86, 330,538.45 and 130,629.49 is: 180,266.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,523.86 : 330,538.45 = 130,629.49 : x
  2. Step 2: Convert to fraction form
    239,523.86/330,538.45 = 130,629.49/x
  3. Step 3: Cross multiply
    239,523.86x = 330,538.45 × 130,629.49
  4. Step 4: Simplify right side
    239,523.86x = 43,178,069,148.89
  5. Step 5: Solve for x
    x = 43,178,069,148.89/239,523.86
  6. Step 6: Final answer
    x = 180,266.25

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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.