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Finding the Fourth Proportional to 305,430.60, 458,583.30 and 231,072.60

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Solution

The fourth proportional to 305,430.60, 458,583.30 and 231,072.60 is: 346,939.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,430.60 : 458,583.30 = 231,072.60 : x
  2. Step 2: Convert to fraction form
    305,430.60/458,583.30 = 231,072.60/x
  3. Step 3: Cross multiply
    305,430.60x = 458,583.30 × 231,072.60
  4. Step 4: Simplify right side
    305,430.60x = 105,966,035,447.58
  5. Step 5: Solve for x
    x = 105,966,035,447.58/305,430.60
  6. Step 6: Final answer
    x = 346,939.81

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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.