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Finding the Fourth Proportional to 437,628.72, 656,553.78 and 122,085.48

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Solution

The fourth proportional to 437,628.72, 656,553.78 and 122,085.48 is: 183,159.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,628.72 : 656,553.78 = 122,085.48 : x
  2. Step 2: Convert to fraction form
    437,628.72/656,553.78 = 122,085.48/x
  3. Step 3: Cross multiply
    437,628.72x = 656,553.78 × 122,085.48
  4. Step 4: Simplify right side
    437,628.72x = 80,155,683,377.11
  5. Step 5: Solve for x
    x = 80,155,683,377.11/437,628.72
  6. Step 6: Final answer
    x = 183,159.10

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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.