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Finding the Fourth Proportional to 228,523.21, 342,574.85 and 78,727.88

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Solution

The fourth proportional to 228,523.21, 342,574.85 and 78,727.88 is: 118,019.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,523.21 : 342,574.85 = 78,727.88 : x
  2. Step 2: Convert to fraction form
    228,523.21/342,574.85 = 78,727.88/x
  3. Step 3: Cross multiply
    228,523.21x = 342,574.85 × 78,727.88
  4. Step 4: Simplify right side
    228,523.21x = 26,970,192,735.07
  5. Step 5: Solve for x
    x = 26,970,192,735.07/228,523.21
  6. Step 6: Final answer
    x = 118,019.49

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1.5x scale

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.