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Finding the Fourth Proportional to 386,316.60, 579,474.90 and 176,364.60

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Solution

The fourth proportional to 386,316.60, 579,474.90 and 176,364.60 is: 264,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,316.60 : 579,474.90 = 176,364.60 : x
  2. Step 2: Convert to fraction form
    386,316.60/579,474.90 = 176,364.60/x
  3. Step 3: Cross multiply
    386,316.60x = 579,474.90 × 176,364.60
  4. Step 4: Simplify right side
    386,316.60x = 102,198,858,948.54
  5. Step 5: Solve for x
    x = 102,198,858,948.54/386,316.60
  6. Step 6: Final answer
    x = 264,546.90

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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.