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Finding the Fourth Proportional to 418,739.44, 627,729.08 and 152,311.64

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Solution

The fourth proportional to 418,739.44, 627,729.08 and 152,311.64 is: 228,329.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,739.44 : 627,729.08 = 152,311.64 : x
  2. Step 2: Convert to fraction form
    418,739.44/627,729.08 = 152,311.64/x
  3. Step 3: Cross multiply
    418,739.44x = 627,729.08 × 152,311.64
  4. Step 4: Simplify right side
    418,739.44x = 95,610,445,650.49
  5. Step 5: Solve for x
    x = 95,610,445,650.49/418,739.44
  6. Step 6: Final answer
    x = 228,329.21

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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.