Home / 320,945.76-442,886.40-177,697.80

Finding the Fourth Proportional to 320,945.76, 442,886.40 and 177,697.80

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Solution

The fourth proportional to 320,945.76, 442,886.40 and 177,697.80 is: 245,212.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,945.76 : 442,886.40 = 177,697.80 : x
  2. Step 2: Convert to fraction form
    320,945.76/442,886.40 = 177,697.80/x
  3. Step 3: Cross multiply
    320,945.76x = 442,886.40 × 177,697.80
  4. Step 4: Simplify right side
    320,945.76x = 78,699,938,929.92
  5. Step 5: Solve for x
    x = 78,699,938,929.92/320,945.76
  6. Step 6: Final answer
    x = 245,212.58

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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.