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Finding the Fourth Proportional to 257,058.59, 354,630.94 and 155,026.03

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Solution

The fourth proportional to 257,058.59, 354,630.94 and 155,026.03 is: 213,869.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,058.59 : 354,630.94 = 155,026.03 : x
  2. Step 2: Convert to fraction form
    257,058.59/354,630.94 = 155,026.03/x
  3. Step 3: Cross multiply
    257,058.59x = 354,630.94 × 155,026.03
  4. Step 4: Simplify right side
    257,058.59x = 54,977,026,743.37
  5. Step 5: Solve for x
    x = 54,977,026,743.37/257,058.59
  6. Step 6: Final answer
    x = 213,869.63

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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.