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Finding the Fourth Proportional to 298,279.32, 411,613.02 and 164,134.68

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Solution

The fourth proportional to 298,279.32, 411,613.02 and 164,134.68 is: 226,499.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,279.32 : 411,613.02 = 164,134.68 : x
  2. Step 2: Convert to fraction form
    298,279.32/411,613.02 = 164,134.68/x
  3. Step 3: Cross multiply
    298,279.32x = 411,613.02 × 164,134.68
  4. Step 4: Simplify right side
    298,279.32x = 67,559,971,321.53
  5. Step 5: Solve for x
    x = 67,559,971,321.53/298,279.32
  6. Step 6: Final answer
    x = 226,499.01

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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.