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Finding the Fourth Proportional to 239,886.56, 331,047.56 and 155,151.25

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Solution

The fourth proportional to 239,886.56, 331,047.56 and 155,151.25 is: 214,111.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,886.56 : 331,047.56 = 155,151.25 : x
  2. Step 2: Convert to fraction form
    239,886.56/331,047.56 = 155,151.25/x
  3. Step 3: Cross multiply
    239,886.56x = 331,047.56 × 155,151.25
  4. Step 4: Simplify right side
    239,886.56x = 51,362,441,430.98
  5. Step 5: Solve for x
    x = 51,362,441,430.98/239,886.56
  6. Step 6: Final answer
    x = 214,111.37

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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.