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Finding the Fourth Proportional to 326,714.40, 490,363.20 and 282,391.20

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Solution

The fourth proportional to 326,714.40, 490,363.20 and 282,391.20 is: 423,838.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,714.40 : 490,363.20 = 282,391.20 : x
  2. Step 2: Convert to fraction form
    326,714.40/490,363.20 = 282,391.20/x
  3. Step 3: Cross multiply
    326,714.40x = 490,363.20 × 282,391.20
  4. Step 4: Simplify right side
    326,714.40x = 138,474,252,483.84
  5. Step 5: Solve for x
    x = 138,474,252,483.84/326,714.40
  6. Step 6: Final answer
    x = 423,838.84

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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.