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Finding the Fourth Proportional to 305,874.30, 458,811.45 and 81,269.40

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Solution

The fourth proportional to 305,874.30, 458,811.45 and 81,269.40 is: 121,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,874.30 : 458,811.45 = 81,269.40 : x
  2. Step 2: Convert to fraction form
    305,874.30/458,811.45 = 81,269.40/x
  3. Step 3: Cross multiply
    305,874.30x = 458,811.45 × 81,269.40
  4. Step 4: Simplify right side
    305,874.30x = 37,287,331,254.63
  5. Step 5: Solve for x
    x = 37,287,331,254.63/305,874.30
  6. Step 6: Final answer
    x = 121,904.10

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