Home / 320,981.36-442,948.80-177,738.32

Finding the Fourth Proportional to 320,981.36, 442,948.80 and 177,738.32

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Solution

The fourth proportional to 320,981.36, 442,948.80 and 177,738.32 is: 245,275.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,981.36 : 442,948.80 = 177,738.32 : x
  2. Step 2: Convert to fraction form
    320,981.36/442,948.80 = 177,738.32/x
  3. Step 3: Cross multiply
    320,981.36x = 442,948.80 × 177,738.32
  4. Step 4: Simplify right side
    320,981.36x = 78,728,973,343.27
  5. Step 5: Solve for x
    x = 78,728,973,343.27/320,981.36
  6. Step 6: Final answer
    x = 245,275.85

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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.