Home / 320,929.66-442,896.77-177,689.70

Finding the Fourth Proportional to 320,929.66, 442,896.77 and 177,689.70

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Solution

The fourth proportional to 320,929.66, 442,896.77 and 177,689.70 is: 245,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,929.66 : 442,896.77 = 177,689.70 : x
  2. Step 2: Convert to fraction form
    320,929.66/442,896.77 = 177,689.70/x
  3. Step 3: Cross multiply
    320,929.66x = 442,896.77 × 177,689.70
  4. Step 4: Simplify right side
    320,929.66x = 78,698,191,642.96
  5. Step 5: Solve for x
    x = 78,698,191,642.96/320,929.66
  6. Step 6: Final answer
    x = 245,219.44

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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.