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Finding the Fourth Proportional to 308,340.48, 425,486.34 and 187,465.02

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Solution

The fourth proportional to 308,340.48, 425,486.34 and 187,465.02 is: 258,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,340.48 : 425,486.34 = 187,465.02 : x
  2. Step 2: Convert to fraction form
    308,340.48/425,486.34 = 187,465.02/x
  3. Step 3: Cross multiply
    308,340.48x = 425,486.34 × 187,465.02
  4. Step 4: Simplify right side
    308,340.48x = 79,763,805,237.83
  5. Step 5: Solve for x
    x = 79,763,805,237.83/308,340.48
  6. Step 6: Final answer
    x = 258,687.43

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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.