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Finding the Fourth Proportional to 318,613.72, 439,687.02 and 175,372.72

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Solution

The fourth proportional to 318,613.72, 439,687.02 and 175,372.72 is: 242,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,613.72 : 439,687.02 = 175,372.72 : x
  2. Step 2: Convert to fraction form
    318,613.72/439,687.02 = 175,372.72/x
  3. Step 3: Cross multiply
    318,613.72x = 439,687.02 × 175,372.72
  4. Step 4: Simplify right side
    318,613.72x = 77,109,108,646.09
  5. Step 5: Solve for x
    x = 77,109,108,646.09/318,613.72
  6. Step 6: Final answer
    x = 242,014.40

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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.