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Finding the Fourth Proportional to 478,576.20, 717,815.70 and 163,028.55

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Solution

The fourth proportional to 478,576.20, 717,815.70 and 163,028.55 is: 244,526.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,576.20 : 717,815.70 = 163,028.55 : x
  2. Step 2: Convert to fraction form
    478,576.20/717,815.70 = 163,028.55/x
  3. Step 3: Cross multiply
    478,576.20x = 717,815.70 × 163,028.55
  4. Step 4: Simplify right side
    478,576.20x = 117,024,452,738.24
  5. Step 5: Solve for x
    x = 117,024,452,738.24/478,576.20
  6. Step 6: Final answer
    x = 244,526.27

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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.