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Finding the Fourth Proportional to 492,689.60, 738,804.75 and 255,968.72

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Solution

The fourth proportional to 492,689.60, 738,804.75 and 255,968.72 is: 383,833.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,689.60 : 738,804.75 = 255,968.72 : x
  2. Step 2: Convert to fraction form
    492,689.60/738,804.75 = 255,968.72/x
  3. Step 3: Cross multiply
    492,689.60x = 738,804.75 × 255,968.72
  4. Step 4: Simplify right side
    492,689.60x = 189,110,906,187.42
  5. Step 5: Solve for x
    x = 189,110,906,187.42/492,689.60
  6. Step 6: Final answer
    x = 383,833.77

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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.