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Finding the Fourth Proportional to 219,376.46, 302,844.78 and 138,843.02

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Solution

The fourth proportional to 219,376.46, 302,844.78 and 138,843.02 is: 191,669.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,376.46 : 302,844.78 = 138,843.02 : x
  2. Step 2: Convert to fraction form
    219,376.46/302,844.78 = 138,843.02/x
  3. Step 3: Cross multiply
    219,376.46x = 302,844.78 × 138,843.02
  4. Step 4: Simplify right side
    219,376.46x = 42,047,883,152.22
  5. Step 5: Solve for x
    x = 42,047,883,152.22/219,376.46
  6. Step 6: Final answer
    x = 191,669.99

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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.