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Finding the Fourth Proportional to 308,040.45, 425,092.50 and 172,088.03

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Solution

The fourth proportional to 308,040.45, 425,092.50 and 172,088.03 is: 237,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,040.45 : 425,092.50 = 172,088.03 : x
  2. Step 2: Convert to fraction form
    308,040.45/425,092.50 = 172,088.03/x
  3. Step 3: Cross multiply
    308,040.45x = 425,092.50 × 172,088.03
  4. Step 4: Simplify right side
    308,040.45x = 73,153,328,767.31
  5. Step 5: Solve for x
    x = 73,153,328,767.31/308,040.45
  6. Step 6: Final answer
    x = 237,479.62

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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.