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Finding the Fourth Proportional to 239,305.86, 330,011.82 and 157,487.76

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Solution

The fourth proportional to 239,305.86, 330,011.82 and 157,487.76 is: 217,181.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,305.86 : 330,011.82 = 157,487.76 : x
  2. Step 2: Convert to fraction form
    239,305.86/330,011.82 = 157,487.76/x
  3. Step 3: Cross multiply
    239,305.86x = 330,011.82 × 157,487.76
  4. Step 4: Simplify right side
    239,305.86x = 51,972,822,305.32
  5. Step 5: Solve for x
    x = 51,972,822,305.32/239,305.86
  6. Step 6: Final answer
    x = 217,181.57

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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.