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Finding the Fourth Proportional to 479,085.74, 661,178.04 and 275,176.02

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Solution

The fourth proportional to 479,085.74, 661,178.04 and 275,176.02 is: 379,765.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,085.74 : 661,178.04 = 275,176.02 : x
  2. Step 2: Convert to fraction form
    479,085.74/661,178.04 = 275,176.02/x
  3. Step 3: Cross multiply
    479,085.74x = 661,178.04 × 275,176.02
  4. Step 4: Simplify right side
    479,085.74x = 181,940,341,558.60
  5. Step 5: Solve for x
    x = 181,940,341,558.60/479,085.74
  6. Step 6: Final answer
    x = 379,765.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.