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Finding the Fourth Proportional to 383,616.80, 574,939.20 and 146,643.20

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Solution

The fourth proportional to 383,616.80, 574,939.20 and 146,643.20 is: 219,779.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,616.80 : 574,939.20 = 146,643.20 : x
  2. Step 2: Convert to fraction form
    383,616.80/574,939.20 = 146,643.20/x
  3. Step 3: Cross multiply
    383,616.80x = 574,939.20 × 146,643.20
  4. Step 4: Simplify right side
    383,616.80x = 84,310,924,093.44
  5. Step 5: Solve for x
    x = 84,310,924,093.44/383,616.80
  6. Step 6: Final answer
    x = 219,779.02

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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.