Home / 309,595.20-427,236.64-173,629.12

Finding the Fourth Proportional to 309,595.20, 427,236.64 and 173,629.12

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Solution

The fourth proportional to 309,595.20, 427,236.64 and 173,629.12 is: 239,605.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,595.20 : 427,236.64 = 173,629.12 : x
  2. Step 2: Convert to fraction form
    309,595.20/427,236.64 = 173,629.12/x
  3. Step 3: Cross multiply
    309,595.20x = 427,236.64 × 173,629.12
  4. Step 4: Simplify right side
    309,595.20x = 74,180,721,834.96
  5. Step 5: Solve for x
    x = 74,180,721,834.96/309,595.20
  6. Step 6: Final answer
    x = 239,605.53

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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.