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Finding the Fourth Proportional to 457,203.16, 630,949.28 and 273,630.72

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Solution

The fourth proportional to 457,203.16, 630,949.28 and 273,630.72 is: 377,615.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,203.16 : 630,949.28 = 273,630.72 : x
  2. Step 2: Convert to fraction form
    457,203.16/630,949.28 = 273,630.72/x
  3. Step 3: Cross multiply
    457,203.16x = 630,949.28 × 273,630.72
  4. Step 4: Simplify right side
    457,203.16x = 172,647,105,769.88
  5. Step 5: Solve for x
    x = 172,647,105,769.88/457,203.16
  6. Step 6: Final answer
    x = 377,615.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.