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Finding the Fourth Proportional to 239,769, 330,881.22 and 133,785

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Solution

The fourth proportional to 239,769, 330,881.22 and 133,785 is: 184,623.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,769 : 330,881.22 = 133,785 : x
  2. Step 2: Convert to fraction form
    239,769/330,881.22 = 133,785/x
  3. Step 3: Cross multiply
    239,769x = 330,881.22 × 133,785
  4. Step 4: Simplify right side
    239,769x = 44,266,944,017.70
  5. Step 5: Solve for x
    x = 44,266,944,017.70/239,769
  6. Step 6: Final answer
    x = 184,623.30

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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.