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Finding the Fourth Proportional to 434,591.70, 651,929.87 and 134,991.73

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Solution

The fourth proportional to 434,591.70, 651,929.87 and 134,991.73 is: 202,500.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,591.70 : 651,929.87 = 134,991.73 : x
  2. Step 2: Convert to fraction form
    434,591.70/651,929.87 = 134,991.73/x
  3. Step 3: Cross multiply
    434,591.70x = 651,929.87 × 134,991.73
  4. Step 4: Simplify right side
    434,591.70x = 88,005,140,989.98
  5. Step 5: Solve for x
    x = 88,005,140,989.98/434,591.70
  6. Step 6: Final answer
    x = 202,500.74

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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.