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Finding the Fourth Proportional to 308,580.30, 425,880.24 and 172,621.80

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Solution

The fourth proportional to 308,580.30, 425,880.24 and 172,621.80 is: 238,240.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,580.30 : 425,880.24 = 172,621.80 : x
  2. Step 2: Convert to fraction form
    308,580.30/425,880.24 = 172,621.80/x
  3. Step 3: Cross multiply
    308,580.30x = 425,880.24 × 172,621.80
  4. Step 4: Simplify right side
    308,580.30x = 73,516,213,613.23
  5. Step 5: Solve for x
    x = 73,516,213,613.23/308,580.30
  6. Step 6: Final answer
    x = 238,240.14

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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.