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Finding the Fourth Proportional to 305,599.43, 458,493 and 145,879.18

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Solution

The fourth proportional to 305,599.43, 458,493 and 145,879.18 is: 218,863.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,599.43 : 458,493 = 145,879.18 : x
  2. Step 2: Convert to fraction form
    305,599.43/458,493 = 145,879.18/x
  3. Step 3: Cross multiply
    305,599.43x = 458,493 × 145,879.18
  4. Step 4: Simplify right side
    305,599.43x = 66,884,582,875.74
  5. Step 5: Solve for x
    x = 66,884,582,875.74/305,599.43
  6. Step 6: Final answer
    x = 218,863.57

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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.