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Finding the Fourth Proportional to 239,417.70, 330,398.56 and 131,991.51

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Solution

The fourth proportional to 239,417.70, 330,398.56 and 131,991.51 is: 182,149.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,417.70 : 330,398.56 = 131,991.51 : x
  2. Step 2: Convert to fraction form
    239,417.70/330,398.56 = 131,991.51/x
  3. Step 3: Cross multiply
    239,417.70x = 330,398.56 × 131,991.51
  4. Step 4: Simplify right side
    239,417.70x = 43,609,804,836.23
  5. Step 5: Solve for x
    x = 43,609,804,836.23/239,417.70
  6. Step 6: Final answer
    x = 182,149.46

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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.