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Finding the Fourth Proportional to 518,351.84, 777,527.76 and 219,170.24

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Solution

The fourth proportional to 518,351.84, 777,527.76 and 219,170.24 is: 328,755.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,351.84 : 777,527.76 = 219,170.24 : x
  2. Step 2: Convert to fraction form
    518,351.84/777,527.76 = 219,170.24/x
  3. Step 3: Cross multiply
    518,351.84x = 777,527.76 × 219,170.24
  4. Step 4: Simplify right side
    518,351.84x = 170,410,945,765.86
  5. Step 5: Solve for x
    x = 170,410,945,765.86/518,351.84
  6. Step 6: Final answer
    x = 328,755.36

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Double scale
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Similar ratio
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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.