Home / 320,912.16-442,862.28-177,674.76

Finding the Fourth Proportional to 320,912.16, 442,862.28 and 177,674.76

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Solution

The fourth proportional to 320,912.16, 442,862.28 and 177,674.76 is: 245,193.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,912.16 : 442,862.28 = 177,674.76 : x
  2. Step 2: Convert to fraction form
    320,912.16/442,862.28 = 177,674.76/x
  3. Step 3: Cross multiply
    320,912.16x = 442,862.28 × 177,674.76
  4. Step 4: Simplify right side
    320,912.16x = 78,685,449,312.05
  5. Step 5: Solve for x
    x = 78,685,449,312.05/320,912.16
  6. Step 6: Final answer
    x = 245,193.11

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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.