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Finding the Fourth Proportional to 219,291.60, 302,622.38 and 118,689.60

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Solution

The fourth proportional to 219,291.60, 302,622.38 and 118,689.60 is: 163,791.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,291.60 : 302,622.38 = 118,689.60 : x
  2. Step 2: Convert to fraction form
    219,291.60/302,622.38 = 118,689.60/x
  3. Step 3: Cross multiply
    219,291.60x = 302,622.38 × 118,689.60
  4. Step 4: Simplify right side
    219,291.60x = 35,918,129,233.25
  5. Step 5: Solve for x
    x = 35,918,129,233.25/219,291.60
  6. Step 6: Final answer
    x = 163,791.63

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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.