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Finding the Fourth Proportional to 331,228.76, 496,851.30 and 120,866.63

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Solution

The fourth proportional to 331,228.76, 496,851.30 and 120,866.63 is: 181,302.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,228.76 : 496,851.30 = 120,866.63 : x
  2. Step 2: Convert to fraction form
    331,228.76/496,851.30 = 120,866.63/x
  3. Step 3: Cross multiply
    331,228.76x = 496,851.30 × 120,866.63
  4. Step 4: Simplify right side
    331,228.76x = 60,052,742,242.12
  5. Step 5: Solve for x
    x = 60,052,742,242.12/331,228.76
  6. Step 6: Final answer
    x = 181,302.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.