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Finding the Fourth Proportional to 219,571.84, 302,897.60 and 138,863.36

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Solution

The fourth proportional to 219,571.84, 302,897.60 and 138,863.36 is: 191,560.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,571.84 : 302,897.60 = 138,863.36 : x
  2. Step 2: Convert to fraction form
    219,571.84/302,897.60 = 138,863.36/x
  3. Step 3: Cross multiply
    219,571.84x = 302,897.60 × 138,863.36
  4. Step 4: Simplify right side
    219,571.84x = 42,061,378,471.94
  5. Step 5: Solve for x
    x = 42,061,378,471.94/219,571.84
  6. Step 6: Final answer
    x = 191,560.90

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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.