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Finding the Fourth Proportional to 326,567.31, 490,037.51 and 126,861.71

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Solution

The fourth proportional to 326,567.31, 490,037.51 and 126,861.71 is: 190,365.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,567.31 : 490,037.51 = 126,861.71 : x
  2. Step 2: Convert to fraction form
    326,567.31/490,037.51 = 126,861.71/x
  3. Step 3: Cross multiply
    326,567.31x = 490,037.51 × 126,861.71
  4. Step 4: Simplify right side
    326,567.31x = 62,166,993,398.25
  5. Step 5: Solve for x
    x = 62,166,993,398.25/326,567.31
  6. Step 6: Final answer
    x = 190,365.02

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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.