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Finding the Fourth Proportional to 279,079.04, 384,993.72 and 165,821.60

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Solution

The fourth proportional to 279,079.04, 384,993.72 and 165,821.60 is: 228,753.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,079.04 : 384,993.72 = 165,821.60 : x
  2. Step 2: Convert to fraction form
    279,079.04/384,993.72 = 165,821.60/x
  3. Step 3: Cross multiply
    279,079.04x = 384,993.72 × 165,821.60
  4. Step 4: Simplify right side
    279,079.04x = 63,840,274,640.35
  5. Step 5: Solve for x
    x = 63,840,274,640.35/279,079.04
  6. Step 6: Final answer
    x = 228,753.38

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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.