Home / 320,943.78-442,927.32-177,717.15

Finding the Fourth Proportional to 320,943.78, 442,927.32 and 177,717.15

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Solution

The fourth proportional to 320,943.78, 442,927.32 and 177,717.15 is: 245,263.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,943.78 : 442,927.32 = 177,717.15 : x
  2. Step 2: Convert to fraction form
    320,943.78/442,927.32 = 177,717.15/x
  3. Step 3: Cross multiply
    320,943.78x = 442,927.32 × 177,717.15
  4. Step 4: Simplify right side
    320,943.78x = 78,715,780,967.54
  5. Step 5: Solve for x
    x = 78,715,780,967.54/320,943.78
  6. Step 6: Final answer
    x = 245,263.46

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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.