Home / 443,128.79-611,483.20-261,806.33

Finding the Fourth Proportional to 443,128.79, 611,483.20 and 261,806.33

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Solution

The fourth proportional to 443,128.79, 611,483.20 and 261,806.33 is: 361,272.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,128.79 : 611,483.20 = 261,806.33 : x
  2. Step 2: Convert to fraction form
    443,128.79/611,483.20 = 261,806.33/x
  3. Step 3: Cross multiply
    443,128.79x = 611,483.20 × 261,806.33
  4. Step 4: Simplify right side
    443,128.79x = 160,090,172,448.66
  5. Step 5: Solve for x
    x = 160,090,172,448.66/443,128.79
  6. Step 6: Final answer
    x = 361,272.33

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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.