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Finding the Fourth Proportional to 239,409.65, 330,386.32 and 131,977.32

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Solution

The fourth proportional to 239,409.65, 330,386.32 and 131,977.32 is: 182,129.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,409.65 : 330,386.32 = 131,977.32 : x
  2. Step 2: Convert to fraction form
    239,409.65/330,386.32 = 131,977.32/x
  3. Step 3: Cross multiply
    239,409.65x = 330,386.32 × 131,977.32
  4. Step 4: Simplify right side
    239,409.65x = 43,603,501,739.81
  5. Step 5: Solve for x
    x = 43,603,501,739.81/239,409.65
  6. Step 6: Final answer
    x = 182,129.26

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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.