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Finding the Fourth Proportional to 308,355.27, 425,661.47 and 187,535.34

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Solution

The fourth proportional to 308,355.27, 425,661.47 and 187,535.34 is: 258,878.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,355.27 : 425,661.47 = 187,535.34 : x
  2. Step 2: Convert to fraction form
    308,355.27/425,661.47 = 187,535.34/x
  3. Step 3: Cross multiply
    308,355.27x = 425,661.47 × 187,535.34
  4. Step 4: Simplify right side
    308,355.27x = 79,826,567,563.67
  5. Step 5: Solve for x
    x = 79,826,567,563.67/308,355.27
  6. Step 6: Final answer
    x = 258,878.56

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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.