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Finding the Fourth Proportional to 243,676.17, 365,514.30 and 66,209.40

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Solution

The fourth proportional to 243,676.17, 365,514.30 and 66,209.40 is: 99,314.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,676.17 : 365,514.30 = 66,209.40 : x
  2. Step 2: Convert to fraction form
    243,676.17/365,514.30 = 66,209.40/x
  3. Step 3: Cross multiply
    243,676.17x = 365,514.30 × 66,209.40
  4. Step 4: Simplify right side
    243,676.17x = 24,200,482,494.42
  5. Step 5: Solve for x
    x = 24,200,482,494.42/243,676.17
  6. Step 6: Final answer
    x = 99,314.11

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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.