Home / 320,890.32-442,834.92-177,646.32

Finding the Fourth Proportional to 320,890.32, 442,834.92 and 177,646.32

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Solution

The fourth proportional to 320,890.32, 442,834.92 and 177,646.32 is: 245,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,890.32 : 442,834.92 = 177,646.32 : x
  2. Step 2: Convert to fraction form
    320,890.32/442,834.92 = 177,646.32/x
  3. Step 3: Cross multiply
    320,890.32x = 442,834.92 × 177,646.32
  4. Step 4: Simplify right side
    320,890.32x = 78,667,993,905.49
  5. Step 5: Solve for x
    x = 78,667,993,905.49/320,890.32
  6. Step 6: Final answer
    x = 245,155.40

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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.