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Finding the Fourth Proportional to 248,281.50, 342,628.47 and 135,105.06

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Solution

The fourth proportional to 248,281.50, 342,628.47 and 135,105.06 is: 186,444.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,281.50 : 342,628.47 = 135,105.06 : x
  2. Step 2: Convert to fraction form
    248,281.50/342,628.47 = 135,105.06/x
  3. Step 3: Cross multiply
    248,281.50x = 342,628.47 × 135,105.06
  4. Step 4: Simplify right side
    248,281.50x = 46,290,839,997.06
  5. Step 5: Solve for x
    x = 46,290,839,997.06/248,281.50
  6. Step 6: Final answer
    x = 186,444.98

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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.