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Finding the Fourth Proportional to 451,399.50, 622,931.40 and 250,195.50

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Solution

The fourth proportional to 451,399.50, 622,931.40 and 250,195.50 is: 345,269.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,399.50 : 622,931.40 = 250,195.50 : x
  2. Step 2: Convert to fraction form
    451,399.50/622,931.40 = 250,195.50/x
  3. Step 3: Cross multiply
    451,399.50x = 622,931.40 × 250,195.50
  4. Step 4: Simplify right side
    451,399.50x = 155,854,633,088.70
  5. Step 5: Solve for x
    x = 155,854,633,088.70/451,399.50
  6. Step 6: Final answer
    x = 345,269.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.