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Finding the Fourth Proportional to 240,539.76, 331,950.29 and 155,804.31

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Solution

The fourth proportional to 240,539.76, 331,950.29 and 155,804.31 is: 215,013.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,539.76 : 331,950.29 = 155,804.31 : x
  2. Step 2: Convert to fraction form
    240,539.76/331,950.29 = 155,804.31/x
  3. Step 3: Cross multiply
    240,539.76x = 331,950.29 × 155,804.31
  4. Step 4: Simplify right side
    240,539.76x = 51,719,285,108.73
  5. Step 5: Solve for x
    x = 51,719,285,108.73/240,539.76
  6. Step 6: Final answer
    x = 215,013.46

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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.