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Finding the Fourth Proportional to 437,864.40, 656,310.60 and 171,536.40

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Solution

The fourth proportional to 437,864.40, 656,310.60 and 171,536.40 is: 257,114.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,864.40 : 656,310.60 = 171,536.40 : x
  2. Step 2: Convert to fraction form
    437,864.40/656,310.60 = 171,536.40/x
  3. Step 3: Cross multiply
    437,864.40x = 656,310.60 × 171,536.40
  4. Step 4: Simplify right side
    437,864.40x = 112,581,157,605.84
  5. Step 5: Solve for x
    x = 112,581,157,605.84/437,864.40
  6. Step 6: Final answer
    x = 257,114.21

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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.