Home / 320,386.32-442,115.28-177,137.76

Finding the Fourth Proportional to 320,386.32, 442,115.28 and 177,137.76

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Solution

The fourth proportional to 320,386.32, 442,115.28 and 177,137.76 is: 244,440.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,386.32 : 442,115.28 = 177,137.76 : x
  2. Step 2: Convert to fraction form
    320,386.32/442,115.28 = 177,137.76/x
  3. Step 3: Cross multiply
    320,386.32x = 442,115.28 × 177,137.76
  4. Step 4: Simplify right side
    320,386.32x = 78,315,310,360.97
  5. Step 5: Solve for x
    x = 78,315,310,360.97/320,386.32
  6. Step 6: Final answer
    x = 244,440.24

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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.