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Finding the Fourth Proportional to 219,321.02, 302,664 and 118,719.02

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Solution

The fourth proportional to 219,321.02, 302,664 and 118,719.02 is: 163,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,321.02 : 302,664 = 118,719.02 : x
  2. Step 2: Convert to fraction form
    219,321.02/302,664 = 118,719.02/x
  3. Step 3: Cross multiply
    219,321.02x = 302,664 × 118,719.02
  4. Step 4: Simplify right side
    219,321.02x = 35,931,973,469.28
  5. Step 5: Solve for x
    x = 35,931,973,469.28/219,321.02
  6. Step 6: Final answer
    x = 163,832.78

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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.