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Finding the Fourth Proportional to 318,029.56, 438,862.25 and 174,789.72

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Solution

The fourth proportional to 318,029.56, 438,862.25 and 174,789.72 is: 241,199.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,029.56 : 438,862.25 = 174,789.72 : x
  2. Step 2: Convert to fraction form
    318,029.56/438,862.25 = 174,789.72/x
  3. Step 3: Cross multiply
    318,029.56x = 438,862.25 × 174,789.72
  4. Step 4: Simplify right side
    318,029.56x = 76,708,610,233.04
  5. Step 5: Solve for x
    x = 76,708,610,233.04/318,029.56
  6. Step 6: Final answer
    x = 241,199.63

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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.