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Finding the Fourth Proportional to 276,666.78, 380,996.16 and 240,351.65

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Solution

The fourth proportional to 276,666.78, 380,996.16 and 240,351.65 is: 330,986.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,666.78 : 380,996.16 = 240,351.65 : x
  2. Step 2: Convert to fraction form
    276,666.78/380,996.16 = 240,351.65/x
  3. Step 3: Cross multiply
    276,666.78x = 380,996.16 × 240,351.65
  4. Step 4: Simplify right side
    276,666.78x = 91,573,055,699.66
  5. Step 5: Solve for x
    x = 91,573,055,699.66/276,666.78
  6. Step 6: Final answer
    x = 330,986.81

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1.5x scale

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.