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Finding the Fourth Proportional to 239,417.88, 330,398.91 and 131,991.77

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Solution

The fourth proportional to 239,417.88, 330,398.91 and 131,991.77 is: 182,149.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,417.88 : 330,398.91 = 131,991.77 : x
  2. Step 2: Convert to fraction form
    239,417.88/330,398.91 = 131,991.77/x
  3. Step 3: Cross multiply
    239,417.88x = 330,398.91 × 131,991.77
  4. Step 4: Simplify right side
    239,417.88x = 43,609,935,284.98
  5. Step 5: Solve for x
    x = 43,609,935,284.98/239,417.88
  6. Step 6: Final answer
    x = 182,149.87

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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.