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Finding the Fourth Proportional to 257,903.73, 386,352.34 and 168,887.36

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Solution

The fourth proportional to 257,903.73, 386,352.34 and 168,887.36 is: 253,001.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,903.73 : 386,352.34 = 168,887.36 : x
  2. Step 2: Convert to fraction form
    257,903.73/386,352.34 = 168,887.36/x
  3. Step 3: Cross multiply
    257,903.73x = 386,352.34 × 168,887.36
  4. Step 4: Simplify right side
    257,903.73x = 65,250,027,276.08
  5. Step 5: Solve for x
    x = 65,250,027,276.08/257,903.73
  6. Step 6: Final answer
    x = 253,001.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.