Home / 321,128.07-443,156.75-177,897.39

Finding the Fourth Proportional to 321,128.07, 443,156.75 and 177,897.39

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Solution

The fourth proportional to 321,128.07, 443,156.75 and 177,897.39 is: 245,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,128.07 : 443,156.75 = 177,897.39 : x
  2. Step 2: Convert to fraction form
    321,128.07/443,156.75 = 177,897.39/x
  3. Step 3: Cross multiply
    321,128.07x = 443,156.75 × 177,897.39
  4. Step 4: Simplify right side
    321,128.07x = 78,836,428,296.40
  5. Step 5: Solve for x
    x = 78,836,428,296.40/321,128.07
  6. Step 6: Final answer
    x = 245,498.40

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1.5x scale

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.