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Finding the Fourth Proportional to 478,745.56, 718,282.38 and 163,423.90

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Solution

The fourth proportional to 478,745.56, 718,282.38 and 163,423.90 is: 245,191.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,745.56 : 718,282.38 = 163,423.90 : x
  2. Step 2: Convert to fraction form
    478,745.56/718,282.38 = 163,423.90/x
  3. Step 3: Cross multiply
    478,745.56x = 718,282.38 × 163,423.90
  4. Step 4: Simplify right side
    478,745.56x = 117,384,507,840.88
  5. Step 5: Solve for x
    x = 117,384,507,840.88/478,745.56
  6. Step 6: Final answer
    x = 245,191.85

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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.