Home / 320,928.16-442,884.36-177,690.72

Finding the Fourth Proportional to 320,928.16, 442,884.36 and 177,690.72

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Solution

The fourth proportional to 320,928.16, 442,884.36 and 177,690.72 is: 245,215.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,928.16 : 442,884.36 = 177,690.72 : x
  2. Step 2: Convert to fraction form
    320,928.16/442,884.36 = 177,690.72/x
  3. Step 3: Cross multiply
    320,928.16x = 442,884.36 × 177,690.72
  4. Step 4: Simplify right side
    320,928.16x = 78,696,440,805.14
  5. Step 5: Solve for x
    x = 78,696,440,805.14/320,928.16
  6. Step 6: Final answer
    x = 245,215.13

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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.