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Finding the Fourth Proportional to 456,634.88, 630,121.92 and 255,392

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Solution

The fourth proportional to 456,634.88, 630,121.92 and 255,392 is: 352,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,634.88 : 630,121.92 = 255,392 : x
  2. Step 2: Convert to fraction form
    456,634.88/630,121.92 = 255,392/x
  3. Step 3: Cross multiply
    456,634.88x = 630,121.92 × 255,392
  4. Step 4: Simplify right side
    456,634.88x = 160,928,097,392.64
  5. Step 5: Solve for x
    x = 160,928,097,392.64/456,634.88
  6. Step 6: Final answer
    x = 352,421.82

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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.