Home / 320,930.16-442,887.12-177,692.72

Finding the Fourth Proportional to 320,930.16, 442,887.12 and 177,692.72

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Solution

The fourth proportional to 320,930.16, 442,887.12 and 177,692.72 is: 245,217.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,930.16 : 442,887.12 = 177,692.72 : x
  2. Step 2: Convert to fraction form
    320,930.16/442,887.12 = 177,692.72/x
  3. Step 3: Cross multiply
    320,930.16x = 442,887.12 × 177,692.72
  4. Step 4: Simplify right side
    320,930.16x = 78,697,817,005.77
  5. Step 5: Solve for x
    x = 78,697,817,005.77/320,930.16
  6. Step 6: Final answer
    x = 245,217.89

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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.