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Finding the Fourth Proportional to 219,674.88, 303,183.72 and 139,109.76

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Solution

The fourth proportional to 219,674.88, 303,183.72 and 139,109.76 is: 191,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,674.88 : 303,183.72 = 139,109.76 : x
  2. Step 2: Convert to fraction form
    219,674.88/303,183.72 = 139,109.76/x
  3. Step 3: Cross multiply
    219,674.88x = 303,183.72 × 139,109.76
  4. Step 4: Simplify right side
    219,674.88x = 42,175,814,525.11
  5. Step 5: Solve for x
    x = 42,175,814,525.11/219,674.88
  6. Step 6: Final answer
    x = 191,991.98

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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.