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Finding the Fourth Proportional to 493,120.82, 680,500.08 and 275,332.86

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Solution

The fourth proportional to 493,120.82, 680,500.08 and 275,332.86 is: 379,955.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,120.82 : 680,500.08 = 275,332.86 : x
  2. Step 2: Convert to fraction form
    493,120.82/680,500.08 = 275,332.86/x
  3. Step 3: Cross multiply
    493,120.82x = 680,500.08 × 275,332.86
  4. Step 4: Simplify right side
    493,120.82x = 187,364,033,256.63
  5. Step 5: Solve for x
    x = 187,364,033,256.63/493,120.82
  6. Step 6: Final answer
    x = 379,955.63

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1.5x scale

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.