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Finding the Fourth Proportional to 219,421.01, 302,799.26 and 118,819.01

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Solution

The fourth proportional to 219,421.01, 302,799.26 and 118,819.01 is: 163,969.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,421.01 : 302,799.26 = 118,819.01 : x
  2. Step 2: Convert to fraction form
    219,421.01/302,799.26 = 118,819.01/x
  3. Step 3: Cross multiply
    219,421.01x = 302,799.26 × 118,819.01
  4. Step 4: Simplify right side
    219,421.01x = 35,978,309,355.98
  5. Step 5: Solve for x
    x = 35,978,309,355.98/219,421.01
  6. Step 6: Final answer
    x = 163,969.30

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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.