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Finding the Fourth Proportional to 219,091.68, 302,346.72 and 118,489.68

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Solution

The fourth proportional to 219,091.68, 302,346.72 and 118,489.68 is: 163,515.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,091.68 : 302,346.72 = 118,489.68 : x
  2. Step 2: Convert to fraction form
    219,091.68/302,346.72 = 118,489.68/x
  3. Step 3: Cross multiply
    219,091.68x = 302,346.72 × 118,489.68
  4. Step 4: Simplify right side
    219,091.68x = 35,824,966,101.85
  5. Step 5: Solve for x
    x = 35,824,966,101.85/219,091.68
  6. Step 6: Final answer
    x = 163,515.87

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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.