Home / 320,578.75-442,360.40-177,319.32

Finding the Fourth Proportional to 320,578.75, 442,360.40 and 177,319.32

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Solution

The fourth proportional to 320,578.75, 442,360.40 and 177,319.32 is: 244,679.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,578.75 : 442,360.40 = 177,319.32 : x
  2. Step 2: Convert to fraction form
    320,578.75/442,360.40 = 177,319.32/x
  3. Step 3: Cross multiply
    320,578.75x = 442,360.40 × 177,319.32
  4. Step 4: Simplify right side
    320,578.75x = 78,439,045,322.93
  5. Step 5: Solve for x
    x = 78,439,045,322.93/320,578.75
  6. Step 6: Final answer
    x = 244,679.49

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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.