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Finding the Fourth Proportional to 248,953.28, 343,545.12 and 135,769.28

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Solution

The fourth proportional to 248,953.28, 343,545.12 and 135,769.28 is: 187,355.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,953.28 : 343,545.12 = 135,769.28 : x
  2. Step 2: Convert to fraction form
    248,953.28/343,545.12 = 135,769.28/x
  3. Step 3: Cross multiply
    248,953.28x = 343,545.12 × 135,769.28
  4. Step 4: Simplify right side
    248,953.28x = 46,642,873,589.91
  5. Step 5: Solve for x
    x = 46,642,873,589.91/248,953.28
  6. Step 6: Final answer
    x = 187,355.93

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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.