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Finding the Fourth Proportional to 326,855.89, 450,931.42 and 189,009.34

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Solution

The fourth proportional to 326,855.89, 450,931.42 and 189,009.34 is: 260,757.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,855.89 : 450,931.42 = 189,009.34 : x
  2. Step 2: Convert to fraction form
    326,855.89/450,931.42 = 189,009.34/x
  3. Step 3: Cross multiply
    326,855.89x = 450,931.42 × 189,009.34
  4. Step 4: Simplify right side
    326,855.89x = 85,230,249,134.42
  5. Step 5: Solve for x
    x = 85,230,249,134.42/326,855.89
  6. Step 6: Final answer
    x = 260,757.88

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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.