Home / 320,980.10-442,947.08-177,737.06

Finding the Fourth Proportional to 320,980.10, 442,947.08 and 177,737.06

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Solution

The fourth proportional to 320,980.10, 442,947.08 and 177,737.06 is: 245,274.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,980.10 : 442,947.08 = 177,737.06 : x
  2. Step 2: Convert to fraction form
    320,980.10/442,947.08 = 177,737.06/x
  3. Step 3: Cross multiply
    320,980.10x = 442,947.08 × 177,737.06
  4. Step 4: Simplify right side
    320,980.10x = 78,728,111,734.78
  5. Step 5: Solve for x
    x = 78,728,111,734.78/320,980.10
  6. Step 6: Final answer
    x = 245,274.12

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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.