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Finding the Fourth Proportional to 239,585.82, 330,644.82 and 138,983.82

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Solution

The fourth proportional to 239,585.82, 330,644.82 and 138,983.82 is: 191,807.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,585.82 : 330,644.82 = 138,983.82 : x
  2. Step 2: Convert to fraction form
    239,585.82/330,644.82 = 138,983.82/x
  3. Step 3: Cross multiply
    239,585.82x = 330,644.82 × 138,983.82
  4. Step 4: Simplify right side
    239,585.82x = 45,954,280,146.81
  5. Step 5: Solve for x
    x = 45,954,280,146.81/239,585.82
  6. Step 6: Final answer
    x = 191,807.18

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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.