Home / 320,937.15-442,907.12-177,697.20

Finding the Fourth Proportional to 320,937.15, 442,907.12 and 177,697.20

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Solution

The fourth proportional to 320,937.15, 442,907.12 and 177,697.20 is: 245,229.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,937.15 : 442,907.12 = 177,697.20 : x
  2. Step 2: Convert to fraction form
    320,937.15/442,907.12 = 177,697.20/x
  3. Step 3: Cross multiply
    320,937.15x = 442,907.12 × 177,697.20
  4. Step 4: Simplify right side
    320,937.15x = 78,703,354,195.58
  5. Step 5: Solve for x
    x = 78,703,354,195.58/320,937.15
  6. Step 6: Final answer
    x = 245,229.80

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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.