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Finding the Fourth Proportional to 308,511.63, 425,744.82 and 172,545.03

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Solution

The fourth proportional to 308,511.63, 425,744.82 and 172,545.03 is: 238,111.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,511.63 : 425,744.82 = 172,545.03 : x
  2. Step 2: Convert to fraction form
    308,511.63/425,744.82 = 172,545.03/x
  3. Step 3: Cross multiply
    308,511.63x = 425,744.82 × 172,545.03
  4. Step 4: Simplify right side
    308,511.63x = 73,460,152,739.24
  5. Step 5: Solve for x
    x = 73,460,152,739.24/308,511.63
  6. Step 6: Final answer
    x = 238,111.45

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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.