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Finding the Fourth Proportional to 437,812.39, 656,664.23 and 117,989.28

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Solution

The fourth proportional to 437,812.39, 656,664.23 and 117,989.28 is: 176,969.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,812.39 : 656,664.23 = 117,989.28 : x
  2. Step 2: Convert to fraction form
    437,812.39/656,664.23 = 117,989.28/x
  3. Step 3: Cross multiply
    437,812.39x = 656,664.23 × 117,989.28
  4. Step 4: Simplify right side
    437,812.39x = 77,479,339,994.43
  5. Step 5: Solve for x
    x = 77,479,339,994.43/437,812.39
  6. Step 6: Final answer
    x = 176,969.27

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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.