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Finding the Fourth Proportional to 239,171, 330,055.98 and 138,627.32

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Solution

The fourth proportional to 239,171, 330,055.98 and 138,627.32 is: 191,305.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,171 : 330,055.98 = 138,627.32 : x
  2. Step 2: Convert to fraction form
    239,171/330,055.98 = 138,627.32/x
  3. Step 3: Cross multiply
    239,171x = 330,055.98 × 138,627.32
  4. Step 4: Simplify right side
    239,171x = 45,754,775,957.37
  5. Step 5: Solve for x
    x = 45,754,775,957.37/239,171
  6. Step 6: Final answer
    x = 191,305.70

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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.