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Finding the Fourth Proportional to 354,364.65, 531,654.30 and 126,630.45

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Solution

The fourth proportional to 354,364.65, 531,654.30 and 126,630.45 is: 189,984.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,364.65 : 531,654.30 = 126,630.45 : x
  2. Step 2: Convert to fraction form
    354,364.65/531,654.30 = 126,630.45/x
  3. Step 3: Cross multiply
    354,364.65x = 531,654.30 × 126,630.45
  4. Step 4: Simplify right side
    354,364.65x = 67,323,623,253.44
  5. Step 5: Solve for x
    x = 67,323,623,253.44/354,364.65
  6. Step 6: Final answer
    x = 189,984.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.