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Finding the Fourth Proportional to 228,613.60, 342,920.40 and 197,120.80

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Solution

The fourth proportional to 228,613.60, 342,920.40 and 197,120.80 is: 295,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,613.60 : 342,920.40 = 197,120.80 : x
  2. Step 2: Convert to fraction form
    228,613.60/342,920.40 = 197,120.80/x
  3. Step 3: Cross multiply
    228,613.60x = 342,920.40 × 197,120.80
  4. Step 4: Simplify right side
    228,613.60x = 67,596,743,584.32
  5. Step 5: Solve for x
    x = 67,596,743,584.32/228,613.60
  6. Step 6: Final answer
    x = 295,681.20

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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.