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Finding the Fourth Proportional to 438,016.56, 656,924.40 and 122,495.76

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Solution

The fourth proportional to 438,016.56, 656,924.40 and 122,495.76 is: 183,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,016.56 : 656,924.40 = 122,495.76 : x
  2. Step 2: Convert to fraction form
    438,016.56/656,924.40 = 122,495.76/x
  3. Step 3: Cross multiply
    438,016.56x = 656,924.40 × 122,495.76
  4. Step 4: Simplify right side
    438,016.56x = 80,470,453,640.54
  5. Step 5: Solve for x
    x = 80,470,453,640.54/438,016.56
  6. Step 6: Final answer
    x = 183,715.55

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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.