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Finding the Fourth Proportional to 519,862.46, 780,093.21 and 220,319.42

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Solution

The fourth proportional to 519,862.46, 780,093.21 and 220,319.42 is: 330,606.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,862.46 : 780,093.21 = 220,319.42 : x
  2. Step 2: Convert to fraction form
    519,862.46/780,093.21 = 220,319.42/x
  3. Step 3: Cross multiply
    519,862.46x = 780,093.21 × 220,319.42
  4. Step 4: Simplify right side
    519,862.46x = 171,869,683,573.14
  5. Step 5: Solve for x
    x = 171,869,683,573.14/519,862.46
  6. Step 6: Final answer
    x = 330,606.07

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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.