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Finding the Fourth Proportional to 219,557.56, 302,988.72 and 118,955.56

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Solution

The fourth proportional to 219,557.56, 302,988.72 and 118,955.56 is: 164,158.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,557.56 : 302,988.72 = 118,955.56 : x
  2. Step 2: Convert to fraction form
    219,557.56/302,988.72 = 118,955.56/x
  3. Step 3: Cross multiply
    219,557.56x = 302,988.72 × 118,955.56
  4. Step 4: Simplify right side
    219,557.56x = 36,042,192,861.28
  5. Step 5: Solve for x
    x = 36,042,192,861.28/219,557.56
  6. Step 6: Final answer
    x = 164,158.29

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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.