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Finding the Fourth Proportional to 326,186.40, 488,696.40 and 276,031.20

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Solution

The fourth proportional to 326,186.40, 488,696.40 and 276,031.20 is: 413,553.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,186.40 : 488,696.40 = 276,031.20 : x
  2. Step 2: Convert to fraction form
    326,186.40/488,696.40 = 276,031.20/x
  3. Step 3: Cross multiply
    326,186.40x = 488,696.40 × 276,031.20
  4. Step 4: Simplify right side
    326,186.40x = 134,895,453,727.68
  5. Step 5: Solve for x
    x = 134,895,453,727.68/326,186.40
  6. Step 6: Final answer
    x = 413,553.27

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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.