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Finding the Fourth Proportional to 437,429.80, 656,144.70 and 271,311.40

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Solution

The fourth proportional to 437,429.80, 656,144.70 and 271,311.40 is: 406,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,429.80 : 656,144.70 = 271,311.40 : x
  2. Step 2: Convert to fraction form
    437,429.80/656,144.70 = 271,311.40/x
  3. Step 3: Cross multiply
    437,429.80x = 656,144.70 × 271,311.40
  4. Step 4: Simplify right side
    437,429.80x = 178,019,537,159.58
  5. Step 5: Solve for x
    x = 178,019,537,159.58/437,429.80
  6. Step 6: Final answer
    x = 406,967.10

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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.