Home / 320,969.84-442,938.20-177,729.76

Finding the Fourth Proportional to 320,969.84, 442,938.20 and 177,729.76

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Solution

The fourth proportional to 320,969.84, 442,938.20 and 177,729.76 is: 245,266.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,969.84 : 442,938.20 = 177,729.76 : x
  2. Step 2: Convert to fraction form
    320,969.84/442,938.20 = 177,729.76/x
  3. Step 3: Cross multiply
    320,969.84x = 442,938.20 × 177,729.76
  4. Step 4: Simplify right side
    320,969.84x = 78,723,299,980.83
  5. Step 5: Solve for x
    x = 78,723,299,980.83/320,969.84
  6. Step 6: Final answer
    x = 245,266.97

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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.