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Finding the Fourth Proportional to 426,234.16, 639,143.88 and 226,650.16

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Solution

The fourth proportional to 426,234.16, 639,143.88 and 226,650.16 is: 339,864.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,234.16 : 639,143.88 = 226,650.16 : x
  2. Step 2: Convert to fraction form
    426,234.16/639,143.88 = 226,650.16/x
  3. Step 3: Cross multiply
    426,234.16x = 639,143.88 × 226,650.16
  4. Step 4: Simplify right side
    426,234.16x = 144,862,062,665.02
  5. Step 5: Solve for x
    x = 144,862,062,665.02/426,234.16
  6. Step 6: Final answer
    x = 339,864.98

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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.