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Finding the Fourth Proportional to 326,032.81, 449,770.34 and 217,187.74

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Solution

The fourth proportional to 326,032.81, 449,770.34 and 217,187.74 is: 299,615.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,032.81 : 449,770.34 = 217,187.74 : x
  2. Step 2: Convert to fraction form
    326,032.81/449,770.34 = 217,187.74/x
  3. Step 3: Cross multiply
    326,032.81x = 449,770.34 × 217,187.74
  4. Step 4: Simplify right side
    326,032.81x = 97,684,603,663.63
  5. Step 5: Solve for x
    x = 97,684,603,663.63/326,032.81
  6. Step 6: Final answer
    x = 299,615.87

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1.5x scale

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.