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Finding the Fourth Proportional to 426,872.96, 640,334.46 and 160,635.77

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Solution

The fourth proportional to 426,872.96, 640,334.46 and 160,635.77 is: 240,963.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,872.96 : 640,334.46 = 160,635.77 : x
  2. Step 2: Convert to fraction form
    426,872.96/640,334.46 = 160,635.77/x
  3. Step 3: Cross multiply
    426,872.96x = 640,334.46 × 160,635.77
  4. Step 4: Simplify right side
    426,872.96x = 102,860,619,039.63
  5. Step 5: Solve for x
    x = 102,860,619,039.63/426,872.96
  6. Step 6: Final answer
    x = 240,963.07

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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.