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Finding the Fourth Proportional to 257,062.41, 354,636.19 and 155,029.85

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Solution

The fourth proportional to 257,062.41, 354,636.19 and 155,029.85 is: 213,874.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,062.41 : 354,636.19 = 155,029.85 : x
  2. Step 2: Convert to fraction form
    257,062.41/354,636.19 = 155,029.85/x
  3. Step 3: Cross multiply
    257,062.41x = 354,636.19 × 155,029.85
  4. Step 4: Simplify right side
    257,062.41x = 54,979,195,090.76
  5. Step 5: Solve for x
    x = 54,979,195,090.76/257,062.41
  6. Step 6: Final answer
    x = 213,874.89

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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.