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Finding the Fourth Proportional to 239,391.63, 330,362.64 and 131,965.47

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Solution

The fourth proportional to 239,391.63, 330,362.64 and 131,965.47 is: 182,113.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,391.63 : 330,362.64 = 131,965.47 : x
  2. Step 2: Convert to fraction form
    239,391.63/330,362.64 = 131,965.47/x
  3. Step 3: Cross multiply
    239,391.63x = 330,362.64 × 131,965.47
  4. Step 4: Simplify right side
    239,391.63x = 43,596,461,058.04
  5. Step 5: Solve for x
    x = 43,596,461,058.04/239,391.63
  6. Step 6: Final answer
    x = 182,113.56

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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.