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Finding the Fourth Proportional to 443,312.48, 611,786.31 and 262,179.68

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Solution

The fourth proportional to 443,312.48, 611,786.31 and 262,179.68 is: 361,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,312.48 : 611,786.31 = 262,179.68 : x
  2. Step 2: Convert to fraction form
    443,312.48/611,786.31 = 262,179.68/x
  3. Step 3: Cross multiply
    443,312.48x = 611,786.31 × 262,179.68
  4. Step 4: Simplify right side
    443,312.48x = 160,397,935,925.25
  5. Step 5: Solve for x
    x = 160,397,935,925.25/443,312.48
  6. Step 6: Final answer
    x = 361,816.88

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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.