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Finding the Fourth Proportional to 308,058.13, 425,105.04 and 172,065

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Solution

The fourth proportional to 308,058.13, 425,105.04 and 172,065 is: 237,441.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,058.13 : 425,105.04 = 172,065 : x
  2. Step 2: Convert to fraction form
    308,058.13/425,105.04 = 172,065/x
  3. Step 3: Cross multiply
    308,058.13x = 425,105.04 × 172,065
  4. Step 4: Simplify right side
    308,058.13x = 73,145,698,707.60
  5. Step 5: Solve for x
    x = 73,145,698,707.60/308,058.13
  6. Step 6: Final answer
    x = 237,441.22

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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.