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Finding the Fourth Proportional to 279,446.94, 385,626.96 and 152,119.80

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Solution

The fourth proportional to 279,446.94, 385,626.96 and 152,119.80 is: 209,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,446.94 : 385,626.96 = 152,119.80 : x
  2. Step 2: Convert to fraction form
    279,446.94/385,626.96 = 152,119.80/x
  3. Step 3: Cross multiply
    279,446.94x = 385,626.96 × 152,119.80
  4. Step 4: Simplify right side
    279,446.94x = 58,661,496,029.81
  5. Step 5: Solve for x
    x = 58,661,496,029.81/279,446.94
  6. Step 6: Final answer
    x = 209,919.98

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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.