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Finding the Fourth Proportional to 275,483.31, 413,372.60 and 255,406.65

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Solution

The fourth proportional to 275,483.31, 413,372.60 and 255,406.65 is: 383,246.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,483.31 : 413,372.60 = 255,406.65 : x
  2. Step 2: Convert to fraction form
    275,483.31/413,372.60 = 255,406.65/x
  3. Step 3: Cross multiply
    275,483.31x = 413,372.60 × 255,406.65
  4. Step 4: Simplify right side
    275,483.31x = 105,578,109,690.76
  5. Step 5: Solve for x
    x = 105,578,109,690.76/275,483.31
  6. Step 6: Final answer
    x = 383,246.85

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1.5x scale

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.