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Finding the Fourth Proportional to 306,510.87, 422,921.62 and 179,161.86

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Solution

The fourth proportional to 306,510.87, 422,921.62 and 179,161.86 is: 247,206.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,510.87 : 422,921.62 = 179,161.86 : x
  2. Step 2: Convert to fraction form
    306,510.87/422,921.62 = 179,161.86/x
  3. Step 3: Cross multiply
    306,510.87x = 422,921.62 × 179,161.86
  4. Step 4: Simplify right side
    306,510.87x = 75,771,424,073.41
  5. Step 5: Solve for x
    x = 75,771,424,073.41/306,510.87
  6. Step 6: Final answer
    x = 247,206.32

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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.