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Finding the Fourth Proportional to 219,905.40, 303,502.08 and 139,340.48

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Solution

The fourth proportional to 219,905.40, 303,502.08 and 139,340.48 is: 192,310.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,905.40 : 303,502.08 = 139,340.48 : x
  2. Step 2: Convert to fraction form
    219,905.40/303,502.08 = 139,340.48/x
  3. Step 3: Cross multiply
    219,905.40x = 303,502.08 × 139,340.48
  4. Step 4: Simplify right side
    219,905.40x = 42,290,123,990.69
  5. Step 5: Solve for x
    x = 42,290,123,990.69/219,905.40
  6. Step 6: Final answer
    x = 192,310.53

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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.