Home / 219,678.88-303,189.24-139,113.76

Finding the Fourth Proportional to 219,678.88, 303,189.24 and 139,113.76

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Solution

The fourth proportional to 219,678.88, 303,189.24 and 139,113.76 is: 191,997.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,678.88 : 303,189.24 = 139,113.76 : x
  2. Step 2: Convert to fraction form
    219,678.88/303,189.24 = 139,113.76/x
  3. Step 3: Cross multiply
    219,678.88x = 303,189.24 × 139,113.76
  4. Step 4: Simplify right side
    219,678.88x = 42,177,795,167.94
  5. Step 5: Solve for x
    x = 42,177,795,167.94/219,678.88
  6. Step 6: Final answer
    x = 191,997.50

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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.