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Finding the Fourth Proportional to 321,456.87, 443,302.74 and 192,373.38

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Solution

The fourth proportional to 321,456.87, 443,302.74 and 192,373.38 is: 265,291.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,456.87 : 443,302.74 = 192,373.38 : x
  2. Step 2: Convert to fraction form
    321,456.87/443,302.74 = 192,373.38/x
  3. Step 3: Cross multiply
    321,456.87x = 443,302.74 × 192,373.38
  4. Step 4: Simplify right side
    321,456.87x = 85,279,646,457.06
  5. Step 5: Solve for x
    x = 85,279,646,457.06/321,456.87
  6. Step 6: Final answer
    x = 265,291.10

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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.