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Finding the Fourth Proportional to 219,289.60, 302,619.62 and 118,687.60

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Solution

The fourth proportional to 219,289.60, 302,619.62 and 118,687.60 is: 163,788.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,289.60 : 302,619.62 = 118,687.60 : x
  2. Step 2: Convert to fraction form
    219,289.60/302,619.62 = 118,687.60/x
  3. Step 3: Cross multiply
    219,289.60x = 302,619.62 × 118,687.60
  4. Step 4: Simplify right side
    219,289.60x = 35,917,196,410.71
  5. Step 5: Solve for x
    x = 35,917,196,410.71/219,289.60
  6. Step 6: Final answer
    x = 163,788.87

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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.