Home / 320,985.91-442,960.54-177,746.05

Finding the Fourth Proportional to 320,985.91, 442,960.54 and 177,746.05

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Solution

The fourth proportional to 320,985.91, 442,960.54 and 177,746.05 is: 245,289.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,985.91 : 442,960.54 = 177,746.05 : x
  2. Step 2: Convert to fraction form
    320,985.91/442,960.54 = 177,746.05/x
  3. Step 3: Cross multiply
    320,985.91x = 442,960.54 × 177,746.05
  4. Step 4: Simplify right side
    320,985.91x = 78,734,486,290.87
  5. Step 5: Solve for x
    x = 78,734,486,290.87/320,985.91
  6. Step 6: Final answer
    x = 245,289.54

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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.