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Finding the Fourth Proportional to 423,351.66, 635,138.16 and 245,687.88

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Solution

The fourth proportional to 423,351.66, 635,138.16 and 245,687.88 is: 368,596.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,351.66 : 635,138.16 = 245,687.88 : x
  2. Step 2: Convert to fraction form
    423,351.66/635,138.16 = 245,687.88/x
  3. Step 3: Cross multiply
    423,351.66x = 635,138.16 × 245,687.88
  4. Step 4: Simplify right side
    423,351.66x = 156,045,748,037.50
  5. Step 5: Solve for x
    x = 156,045,748,037.50/423,351.66
  6. Step 6: Final answer
    x = 368,596.05

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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.