Home / 217,748.12-300,492.40-122,256.86

Finding the Fourth Proportional to 217,748.12, 300,492.40 and 122,256.86

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Solution

The fourth proportional to 217,748.12, 300,492.40 and 122,256.86 is: 168,714.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,748.12 : 300,492.40 = 122,256.86 : x
  2. Step 2: Convert to fraction form
    217,748.12/300,492.40 = 122,256.86/x
  3. Step 3: Cross multiply
    217,748.12x = 300,492.40 × 122,256.86
  4. Step 4: Simplify right side
    217,748.12x = 36,737,257,723.45
  5. Step 5: Solve for x
    x = 36,737,257,723.45/217,748.12
  6. Step 6: Final answer
    x = 168,714.47

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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.