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Finding the Fourth Proportional to 426,461.82, 639,689.46 and 173,682.84

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Solution

The fourth proportional to 426,461.82, 639,689.46 and 173,682.84 is: 260,522.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,461.82 : 639,689.46 = 173,682.84 : x
  2. Step 2: Convert to fraction form
    426,461.82/639,689.46 = 173,682.84/x
  3. Step 3: Cross multiply
    426,461.82x = 639,689.46 × 173,682.84
  4. Step 4: Simplify right side
    426,461.82x = 111,103,082,130.87
  5. Step 5: Solve for x
    x = 111,103,082,130.87/426,461.82
  6. Step 6: Final answer
    x = 260,522.93

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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.