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Finding the Fourth Proportional to 326,735.40, 490,103.10 and 169,271.40

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Solution

The fourth proportional to 326,735.40, 490,103.10 and 169,271.40 is: 253,907.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,735.40 : 490,103.10 = 169,271.40 : x
  2. Step 2: Convert to fraction form
    326,735.40/490,103.10 = 169,271.40/x
  3. Step 3: Cross multiply
    326,735.40x = 490,103.10 × 169,271.40
  4. Step 4: Simplify right side
    326,735.40x = 82,960,437,881.34
  5. Step 5: Solve for x
    x = 82,960,437,881.34/326,735.40
  6. Step 6: Final answer
    x = 253,907.10

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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.