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Finding the Fourth Proportional to 407,018.48, 561,665.76 and 225,737.60

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Solution

The fourth proportional to 407,018.48, 561,665.76 and 225,737.60 is: 311,506.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,018.48 : 561,665.76 = 225,737.60 : x
  2. Step 2: Convert to fraction form
    407,018.48/561,665.76 = 225,737.60/x
  3. Step 3: Cross multiply
    407,018.48x = 561,665.76 × 225,737.60
  4. Step 4: Simplify right side
    407,018.48x = 126,789,080,664.58
  5. Step 5: Solve for x
    x = 126,789,080,664.58/407,018.48
  6. Step 6: Final answer
    x = 311,506.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.