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Finding the Fourth Proportional to 426,558.88, 639,600.18 and 268,448.50

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Solution

The fourth proportional to 426,558.88, 639,600.18 and 268,448.50 is: 402,522.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,558.88 : 639,600.18 = 268,448.50 : x
  2. Step 2: Convert to fraction form
    426,558.88/639,600.18 = 268,448.50/x
  3. Step 3: Cross multiply
    426,558.88x = 639,600.18 × 268,448.50
  4. Step 4: Simplify right side
    426,558.88x = 171,699,708,920.73
  5. Step 5: Solve for x
    x = 171,699,708,920.73/426,558.88
  6. Step 6: Final answer
    x = 402,522.88

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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.