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Finding the Fourth Proportional to 223,201.04, 307,811.40 and 151,687.76

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Solution

The fourth proportional to 223,201.04, 307,811.40 and 151,687.76 is: 209,189.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,201.04 : 307,811.40 = 151,687.76 : x
  2. Step 2: Convert to fraction form
    223,201.04/307,811.40 = 151,687.76/x
  3. Step 3: Cross multiply
    223,201.04x = 307,811.40 × 151,687.76
  4. Step 4: Simplify right side
    223,201.04x = 46,691,221,768.46
  5. Step 5: Solve for x
    x = 46,691,221,768.46/223,201.04
  6. Step 6: Final answer
    x = 209,189.09

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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.