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Finding the Fourth Proportional to 308,512.68, 425,744.52 and 172,545

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Solution

The fourth proportional to 308,512.68, 425,744.52 and 172,545 is: 238,110.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,512.68 : 425,744.52 = 172,545 : x
  2. Step 2: Convert to fraction form
    308,512.68/425,744.52 = 172,545/x
  3. Step 3: Cross multiply
    308,512.68x = 425,744.52 × 172,545
  4. Step 4: Simplify right side
    308,512.68x = 73,460,088,203.40
  5. Step 5: Solve for x
    x = 73,460,088,203.40/308,512.68
  6. Step 6: Final answer
    x = 238,110.43

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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.