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Finding the Fourth Proportional to 239,688, 330,769.44 and 133,704

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Solution

The fourth proportional to 239,688, 330,769.44 and 133,704 is: 184,511.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,688 : 330,769.44 = 133,704 : x
  2. Step 2: Convert to fraction form
    239,688/330,769.44 = 133,704/x
  3. Step 3: Cross multiply
    239,688x = 330,769.44 × 133,704
  4. Step 4: Simplify right side
    239,688x = 44,225,197,205.76
  5. Step 5: Solve for x
    x = 44,225,197,205.76/239,688
  6. Step 6: Final answer
    x = 184,511.52

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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.