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Finding the Fourth Proportional to 452,269.92, 678,503.30 and 136,718.63

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Solution

The fourth proportional to 452,269.92, 678,503.30 and 136,718.63 is: 205,107.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,269.92 : 678,503.30 = 136,718.63 : x
  2. Step 2: Convert to fraction form
    452,269.92/678,503.30 = 136,718.63/x
  3. Step 3: Cross multiply
    452,269.92x = 678,503.30 × 136,718.63
  4. Step 4: Simplify right side
    452,269.92x = 92,764,037,550.37
  5. Step 5: Solve for x
    x = 92,764,037,550.37/452,269.92
  6. Step 6: Final answer
    x = 205,107.69

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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.