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Finding the Fourth Proportional to 443,129.04, 611,483.54 and 261,806.58

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Solution

The fourth proportional to 443,129.04, 611,483.54 and 261,806.58 is: 361,272.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,129.04 : 611,483.54 = 261,806.58 : x
  2. Step 2: Convert to fraction form
    443,129.04/611,483.54 = 261,806.58/x
  3. Step 3: Cross multiply
    443,129.04x = 611,483.54 × 261,806.58
  4. Step 4: Simplify right side
    443,129.04x = 160,090,414,333.69
  5. Step 5: Solve for x
    x = 160,090,414,333.69/443,129.04
  6. Step 6: Final answer
    x = 361,272.68

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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.