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Finding the Fourth Proportional to 520,094.40, 780,144.03 and 220,499.70

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Solution

The fourth proportional to 520,094.40, 780,144.03 and 220,499.70 is: 330,750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,094.40 : 780,144.03 = 220,499.70 : x
  2. Step 2: Convert to fraction form
    520,094.40/780,144.03 = 220,499.70/x
  3. Step 3: Cross multiply
    520,094.40x = 780,144.03 × 220,499.70
  4. Step 4: Simplify right side
    520,094.40x = 172,021,524,571.79
  5. Step 5: Solve for x
    x = 172,021,524,571.79/520,094.40
  6. Step 6: Final answer
    x = 330,750.58

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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.