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Finding the Fourth Proportional to 271,312.40, 406,687.80 and 121,624.40

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Solution

The fourth proportional to 271,312.40, 406,687.80 and 121,624.40 is: 182,310.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,312.40 : 406,687.80 = 121,624.40 : x
  2. Step 2: Convert to fraction form
    271,312.40/406,687.80 = 121,624.40/x
  3. Step 3: Cross multiply
    271,312.40x = 406,687.80 × 121,624.40
  4. Step 4: Simplify right side
    271,312.40x = 49,463,159,662.32
  5. Step 5: Solve for x
    x = 49,463,159,662.32/271,312.40
  6. Step 6: Final answer
    x = 182,310.72

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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.