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Finding the Fourth Proportional to 308,580.86, 425,880.97 and 172,622.36

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Solution

The fourth proportional to 308,580.86, 425,880.97 and 172,622.36 is: 238,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,580.86 : 425,880.97 = 172,622.36 : x
  2. Step 2: Convert to fraction form
    308,580.86/425,880.97 = 172,622.36/x
  3. Step 3: Cross multiply
    308,580.86x = 425,880.97 × 172,622.36
  4. Step 4: Simplify right side
    308,580.86x = 73,516,578,120.49
  5. Step 5: Solve for x
    x = 73,516,578,120.49/308,580.86
  6. Step 6: Final answer
    x = 238,240.89

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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.